Pub Date : 2006-08-07DOI: 10.1109/WOCN.2006.1666602
J. P. Nair, R. R. Raja Kumar
Implicit training (IT) based channel estimation exploits the first order statistics in the received data, induced by superimposing periodic training sequences with good correlation properties, along with information symbols. Hence the need for additional time slots for training the equalizer is avoided. In this paper we investigate on the applicability of this technique to orthogonal frequency division multiplexing (OFDM) systems over a frequency selective fading channel. Based on the estimate, a zero forcing solution is used to equalize the channel. The effect of the deterministic mean of the data on the channel estimate is considered. By exploiting the periodicity of the training sequences in the frequency domain, improved estimates of the channel coefficients are obtained. The performance of the estimator is presented in terms of the mean square estimation error (MSEE) and uncoded bit error rate (BER). All the improvements come at the cost of a loss in bandwidth which makes this scheme similar to the comb type pilot based channel estimation scheme for OFDM
{"title":"Channel estimation and equalization based on implicit training in OFDM systems","authors":"J. P. Nair, R. R. Raja Kumar","doi":"10.1109/WOCN.2006.1666602","DOIUrl":"https://doi.org/10.1109/WOCN.2006.1666602","url":null,"abstract":"Implicit training (IT) based channel estimation exploits the first order statistics in the received data, induced by superimposing periodic training sequences with good correlation properties, along with information symbols. Hence the need for additional time slots for training the equalizer is avoided. In this paper we investigate on the applicability of this technique to orthogonal frequency division multiplexing (OFDM) systems over a frequency selective fading channel. Based on the estimate, a zero forcing solution is used to equalize the channel. The effect of the deterministic mean of the data on the channel estimate is considered. By exploiting the periodicity of the training sequences in the frequency domain, improved estimates of the channel coefficients are obtained. The performance of the estimator is presented in terms of the mean square estimation error (MSEE) and uncoded bit error rate (BER). All the improvements come at the cost of a loss in bandwidth which makes this scheme similar to the comb type pilot based channel estimation scheme for OFDM","PeriodicalId":275012,"journal":{"name":"2006 IFIP International Conference on Wireless and Optical Communications Networks","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122572706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-08-07DOI: 10.1109/WOCN.2006.1666596
M. S. Sricharan, V. Vaidehi, P. Arun
The basic obligation of a wireless system is to provide scope for maximum mobility (terminal) while the system continues to provide the services at agreed levels of quality. The fundamental requirement for the system to support mobility is that it must be aware of the location where the mobile terminal (MT) resides at any point of time. The importance of mobility prediction techniques can be seen at both the network and service levels. This paper proposes a novel mobility prediction technique based on user activity pattern that could overcome some of the drawbacks associated with regular pattern based techniques available in the literature
{"title":"An activity based mobility prediction strategy for next generation wireless networks","authors":"M. S. Sricharan, V. Vaidehi, P. Arun","doi":"10.1109/WOCN.2006.1666596","DOIUrl":"https://doi.org/10.1109/WOCN.2006.1666596","url":null,"abstract":"The basic obligation of a wireless system is to provide scope for maximum mobility (terminal) while the system continues to provide the services at agreed levels of quality. The fundamental requirement for the system to support mobility is that it must be aware of the location where the mobile terminal (MT) resides at any point of time. The importance of mobility prediction techniques can be seen at both the network and service levels. This paper proposes a novel mobility prediction technique based on user activity pattern that could overcome some of the drawbacks associated with regular pattern based techniques available in the literature","PeriodicalId":275012,"journal":{"name":"2006 IFIP International Conference on Wireless and Optical Communications Networks","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126040559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-08-07DOI: 10.1109/WOCN.2006.1666666
L. Suresh, S. Sundaravadivelu, S. Ponmalar
Radiation scattered from a parabolic index planar waveguide with the insertion of metal strip at the centre is analyzed to design the photonic antenna, which transfers the energy from waveguide to free space, using beam propagation method (BPM). This technique allows the interpretation of the metal strip as scattering element of the underlying waveguide mode and radiating sources for the diffracted fields. The parabolic index planar waveguide with the insertion of metal strip with high refractive index value is evaluated and often explicit formulas for the radiating parameters of photonic antennas. The framework allows separation of the effects of the metal strip insertion with high refractive index value and the effects of the specific size of the metal strip element. A straightforward analogy between the effects of the metal strip element's refractive index value, shape and the behaviour of photonic antenna systems allow a clear and sensitive understanding of the effects of metal strip on the directionality of waveguide coupled radiation. The results covered only TE modes and it is possible to achieve high directional photonic antennas in the range of optical wireless frequencies. The results are obtained for various operating wavelengths of parabolic index waveguide structure with power distribution along z-direction and the efficient wavelength is proposed for photonic antenna
{"title":"Analysis of optical waveguide structure using beam propagation method for optical wireless communications","authors":"L. Suresh, S. Sundaravadivelu, S. Ponmalar","doi":"10.1109/WOCN.2006.1666666","DOIUrl":"https://doi.org/10.1109/WOCN.2006.1666666","url":null,"abstract":"Radiation scattered from a parabolic index planar waveguide with the insertion of metal strip at the centre is analyzed to design the photonic antenna, which transfers the energy from waveguide to free space, using beam propagation method (BPM). This technique allows the interpretation of the metal strip as scattering element of the underlying waveguide mode and radiating sources for the diffracted fields. The parabolic index planar waveguide with the insertion of metal strip with high refractive index value is evaluated and often explicit formulas for the radiating parameters of photonic antennas. The framework allows separation of the effects of the metal strip insertion with high refractive index value and the effects of the specific size of the metal strip element. A straightforward analogy between the effects of the metal strip element's refractive index value, shape and the behaviour of photonic antenna systems allow a clear and sensitive understanding of the effects of metal strip on the directionality of waveguide coupled radiation. The results covered only TE modes and it is possible to achieve high directional photonic antennas in the range of optical wireless frequencies. The results are obtained for various operating wavelengths of parabolic index waveguide structure with power distribution along z-direction and the efficient wavelength is proposed for photonic antenna","PeriodicalId":275012,"journal":{"name":"2006 IFIP International Conference on Wireless and Optical Communications Networks","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129305665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-08-07DOI: 10.1109/WOCN.2006.1666658
Wang Shan, Wang Jian-xin, Zhang Xu-dong, Wei Ji-bo
Directional beams can increase the spatial reuse of ad hoc networks, also the limited beamwidth decreases the mutual interference among transmitting signals, so, the performance and the anti-jamming ability are improved greatly. This paper analyzed the existent interferences in ad hoc networks, indicated corresponding methods, and proposed a scheme of using directional antennas. Supported by group mobility scenarios, detailed simulations and evaluations have been done, and results demonstrate the availability of the scheme
{"title":"Performance of anti-jamming ad hoc networks using directional beams with group mobility","authors":"Wang Shan, Wang Jian-xin, Zhang Xu-dong, Wei Ji-bo","doi":"10.1109/WOCN.2006.1666658","DOIUrl":"https://doi.org/10.1109/WOCN.2006.1666658","url":null,"abstract":"Directional beams can increase the spatial reuse of ad hoc networks, also the limited beamwidth decreases the mutual interference among transmitting signals, so, the performance and the anti-jamming ability are improved greatly. This paper analyzed the existent interferences in ad hoc networks, indicated corresponding methods, and proposed a scheme of using directional antennas. Supported by group mobility scenarios, detailed simulations and evaluations have been done, and results demonstrate the availability of the scheme","PeriodicalId":275012,"journal":{"name":"2006 IFIP International Conference on Wireless and Optical Communications Networks","volume":"2007 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128847085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-08-07DOI: 10.1109/WOCN.2006.1666579
S. Vinnakote, S. Naresh, S. Pasupuleti, D. Das
The wireless local area network (WLAN) is becoming popular due to its inherent strength. However, there are major challenges to be over come in WLAN. Some of them are quality of service (QoS), seamless mobility and security. Extensive research is being carried out to address QoS in WLAN. In this paper we propose a new medium access control (MAC) protocol for QoS (New-MACQoS) in WLAN. It has been observed that, the average delay performance by this New-MACQoS for different services (voice, video, best-effort data) is better than the extended distributed coordination function (LDCF) used in IEEE 802.11e and adaptive EDCF (AEDCF) in Qiang Ni, (2005) for QoS of WLAN
{"title":"New-MAC protocol for enhancement of QoS performance in wireless LAN","authors":"S. Vinnakote, S. Naresh, S. Pasupuleti, D. Das","doi":"10.1109/WOCN.2006.1666579","DOIUrl":"https://doi.org/10.1109/WOCN.2006.1666579","url":null,"abstract":"The wireless local area network (WLAN) is becoming popular due to its inherent strength. However, there are major challenges to be over come in WLAN. Some of them are quality of service (QoS), seamless mobility and security. Extensive research is being carried out to address QoS in WLAN. In this paper we propose a new medium access control (MAC) protocol for QoS (New-MACQoS) in WLAN. It has been observed that, the average delay performance by this New-MACQoS for different services (voice, video, best-effort data) is better than the extended distributed coordination function (LDCF) used in IEEE 802.11e and adaptive EDCF (AEDCF) in Qiang Ni, (2005) for QoS of WLAN","PeriodicalId":275012,"journal":{"name":"2006 IFIP International Conference on Wireless and Optical Communications Networks","volume":"53 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120968623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-08-07DOI: 10.1109/WOCN.2006.1666547
S. Gamwarige, C. Kulasekere
The energy driven cluster-head rotation (EDCR) algorithm proposed in S. Gamwarige and E. Kulasekere (2005) has been shown to out performed existing clustering algorithms such as LEACH (W.B. Heinzelman et al., 2002), HEED (O. Younis and S. Fahmy, 2004), ANTCLUST based (J. Kamimura et al., 2004) and SEP (G. Smaragdakis et al., 2004) in terms of END and PNA (95%) lifetime metrics in a distributed wireless sensor network (WSN). In this paper we present theoretical analysis of the performance parameters such as the optimum transmission range (Ropt) and the clustering trigger threshold value (lambdai) of EDCR in terms correctness and complexity of the algorithm. Further we explain how to find the optimal values for such parameters in order to maximize the network lifetime
S. Gamwarige和E. Kulasekere(2005)提出的能量驱动簇头旋转(EDCR)算法已被证明优于现有的聚类算法，如LEACH (W.B. Heinzelman等人，2002)、HEED (O. Younis和S. Fahmy, 2004)、基于ANTCLUST的(J. Kamimura等人，2004)和SEP (G. Smaragdakis等人，2004)在分布式无线传感器网络(WSN)中的END和PNA(95%)寿命指标。本文从算法的正确性和复杂度两方面对EDCR的最佳传输范围(Ropt)和聚类触发阈值(lambdai)等性能参数进行了理论分析。我们进一步解释了如何找到这些参数的最优值，以最大化网络生命周期
{"title":"Performance analysis of the EDCR algorithm in a distributed wireless sensor network","authors":"S. Gamwarige, C. Kulasekere","doi":"10.1109/WOCN.2006.1666547","DOIUrl":"https://doi.org/10.1109/WOCN.2006.1666547","url":null,"abstract":"The energy driven cluster-head rotation (EDCR) algorithm proposed in S. Gamwarige and E. Kulasekere (2005) has been shown to out performed existing clustering algorithms such as LEACH (W.B. Heinzelman et al., 2002), HEED (O. Younis and S. Fahmy, 2004), ANTCLUST based (J. Kamimura et al., 2004) and SEP (G. Smaragdakis et al., 2004) in terms of END and PNA (95%) lifetime metrics in a distributed wireless sensor network (WSN). In this paper we present theoretical analysis of the performance parameters such as the optimum transmission range (Ropt) and the clustering trigger threshold value (lambdai) of EDCR in terms correctness and complexity of the algorithm. Further we explain how to find the optimal values for such parameters in order to maximize the network lifetime","PeriodicalId":275012,"journal":{"name":"2006 IFIP International Conference on Wireless and Optical Communications Networks","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124094531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-08-07DOI: 10.1109/WOCN.2006.1666553
Patrick Hosein
Orthogonal frequency division multiplexing (OFDM) is used in both 802.11 and 802.16 (A. Ghosh et al., 2005) wireless network standards and is being evaluated for fourth generation (4G) networks such as those being proposed in the 3GPP and 3GPP2 standards bodies. Its tolerance to frequency selective fading has made it an attractive choice for these broadband wireless networks. In both downlink and uplink directions, resources can be allocated in three dimensions, frequency, time and power. In both cases the resource allocation is performed primarily by the basestation (BS). In this paper we focus on the allocation of downlink resources when such a network is used for quality of service (QoS) applications. Using a utility function framework, we formulate and solve the corresponding optimization problem and use the optimality conditions to design simple, practical algorithms. In doing so we take into account practical details that have not been addressed in previous work
正交频分复用(OFDM)用于802.11和802.16 (A. Ghosh et al.， 2005)无线网络标准，并正在评估第四代(4G)网络，如3GPP和3GPP2标准机构提出的网络。它对频率选择性衰落的耐受性使其成为这些宽带无线网络的一个有吸引力的选择。无论下行方向还是上行方向，都可以从频率、时间和功率三个维度进行资源分配。在这两种情况下，资源分配主要由基站(BS)执行。在本文中，我们重点研究了当这种网络用于服务质量(QoS)应用时下行链路资源的分配。利用效用函数框架，制定并求解相应的优化问题，并利用最优性条件设计简单实用的算法。在这样做时，我们考虑到在以前的工作中没有处理的实际细节
{"title":"Adaptive subchannel allocation in an OFDMA-based wireless network","authors":"Patrick Hosein","doi":"10.1109/WOCN.2006.1666553","DOIUrl":"https://doi.org/10.1109/WOCN.2006.1666553","url":null,"abstract":"Orthogonal frequency division multiplexing (OFDM) is used in both 802.11 and 802.16 (A. Ghosh et al., 2005) wireless network standards and is being evaluated for fourth generation (4G) networks such as those being proposed in the 3GPP and 3GPP2 standards bodies. Its tolerance to frequency selective fading has made it an attractive choice for these broadband wireless networks. In both downlink and uplink directions, resources can be allocated in three dimensions, frequency, time and power. In both cases the resource allocation is performed primarily by the basestation (BS). In this paper we focus on the allocation of downlink resources when such a network is used for quality of service (QoS) applications. Using a utility function framework, we formulate and solve the corresponding optimization problem and use the optimality conditions to design simple, practical algorithms. In doing so we take into account practical details that have not been addressed in previous work","PeriodicalId":275012,"journal":{"name":"2006 IFIP International Conference on Wireless and Optical Communications Networks","volume":"2547 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127482926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-08-07DOI: 10.1109/WOCN.2006.1666644
V. Saminadan, M. Meenakshi
Wavelength routed all-optical networks are a class of backbone wide area networks (WANs) where connections are routed by intermediate nodes in the optical domain without electronic conversion. The performance of these networks are limited by the linear crosstalk introduced by the non-ideal characteristics of the switches, demultiplexers and filters employed in the network nodes. Nonlinear impairments like stimulated Raman scattering (SRS), stimulated Brillouin scattering (SBS), four-wave mixing (FWM), self phase modulation (SPM) and cross phase modulation (XPM) become significant at higher data rates and/or transmitter power. Previous works have considered the impact of linear impairments while establishing a call in WDM networks. However, the impact of nonlinear impairments has not been considered during the establishment of a call. This work attempts to consider the crosstalk caused by SRS and the linear crosstalk introduced by the optical switches and demultiplexers while establishing lightpaths for dynamically arriving call requests in a 15-node mesh network. Crosstalk leads to poor received signal quality at the destination node. This results in increased receiver bit error rate (BER) thereby degrading the teletraffic performance of the network. A lightpath request is accepted only if the bit error rate (BER) at the destination node is less than 10 -12; otherwise it is rejected
{"title":"Impact of linear and nonlinear crosstalk on the teletraffic performance of WDM optical networks","authors":"V. Saminadan, M. Meenakshi","doi":"10.1109/WOCN.2006.1666644","DOIUrl":"https://doi.org/10.1109/WOCN.2006.1666644","url":null,"abstract":"Wavelength routed all-optical networks are a class of backbone wide area networks (WANs) where connections are routed by intermediate nodes in the optical domain without electronic conversion. The performance of these networks are limited by the linear crosstalk introduced by the non-ideal characteristics of the switches, demultiplexers and filters employed in the network nodes. Nonlinear impairments like stimulated Raman scattering (SRS), stimulated Brillouin scattering (SBS), four-wave mixing (FWM), self phase modulation (SPM) and cross phase modulation (XPM) become significant at higher data rates and/or transmitter power. Previous works have considered the impact of linear impairments while establishing a call in WDM networks. However, the impact of nonlinear impairments has not been considered during the establishment of a call. This work attempts to consider the crosstalk caused by SRS and the linear crosstalk introduced by the optical switches and demultiplexers while establishing lightpaths for dynamically arriving call requests in a 15-node mesh network. Crosstalk leads to poor received signal quality at the destination node. This results in increased receiver bit error rate (BER) thereby degrading the teletraffic performance of the network. A lightpath request is accepted only if the bit error rate (BER) at the destination node is less than 10 -12; otherwise it is rejected","PeriodicalId":275012,"journal":{"name":"2006 IFIP International Conference on Wireless and Optical Communications Networks","volume":"279 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129190223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-08-07DOI: 10.1109/WOCN.2006.1666646
S. Krijestorac, J. Bagby
Advances in high speed network communications have raised the bar of delivering demanding multimedia and data services through Ethernet passive optical networks (EPONs). At their relatively low cost, EPONs have become an attractive solution to providing essential services like voice, video, and data communications reliably, while at the same time providing expected guarantees of the delivery of those services in terms of defined quality of service measures. A continuous theme throughout EPON research has been the study of efficient dynamic bandwidth allocation (DBA) as a key factor in achieving fairness in distributing bandwidth amongst remote network units. In our research, we investigate another factor and its effect of network performance and service delivery: cycle demand proportionality (CDP). By observing the patterns of demand in the network on an individual network unit basis cycle after cycle, we can deduce load characteristics of some units over others. We can then make decisions about subsequent grant allocations based on this factor and aim to achieve better results in the process. We simulate EPONs under varying loads and incorporate the use of CDP in conjunction with currently used DBA schemes. In this paper we present results of achieving improvements in delay performance under light-load circumstances for the cyclic polling DBA scheme
{"title":"Investigating cycle demand proportionality in Ethernet passive optical networks","authors":"S. Krijestorac, J. Bagby","doi":"10.1109/WOCN.2006.1666646","DOIUrl":"https://doi.org/10.1109/WOCN.2006.1666646","url":null,"abstract":"Advances in high speed network communications have raised the bar of delivering demanding multimedia and data services through Ethernet passive optical networks (EPONs). At their relatively low cost, EPONs have become an attractive solution to providing essential services like voice, video, and data communications reliably, while at the same time providing expected guarantees of the delivery of those services in terms of defined quality of service measures. A continuous theme throughout EPON research has been the study of efficient dynamic bandwidth allocation (DBA) as a key factor in achieving fairness in distributing bandwidth amongst remote network units. In our research, we investigate another factor and its effect of network performance and service delivery: cycle demand proportionality (CDP). By observing the patterns of demand in the network on an individual network unit basis cycle after cycle, we can deduce load characteristics of some units over others. We can then make decisions about subsequent grant allocations based on this factor and aim to achieve better results in the process. We simulate EPONs under varying loads and incorporate the use of CDP in conjunction with currently used DBA schemes. In this paper we present results of achieving improvements in delay performance under light-load circumstances for the cyclic polling DBA scheme","PeriodicalId":275012,"journal":{"name":"2006 IFIP International Conference on Wireless and Optical Communications Networks","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130791293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2006-08-07DOI: 10.1109/WOCN.2006.1666536
Pei Li, Weilin Wu
In future wireless communications, there will be a mixture of different traffic classes, which have their own load and quality-of-service (QoS) requirements. In this paper, a traffic load and QoS-oriented packet scheduling (TLQS) is proposed for WCDMA communications, which consider the bit error rate (BER), packet loss, delay and traffic load requirements. The BER requirement can be guaranteed by ideal power control, while the packet loss, delay and traffic load are guaranteed by proper packet scheduling. The TLQS is to schedule the transmission of multimedia packets in the way that the TLQS introduces the traffic load and QoS to deciding the priority of the packets, which are more appropriate for designing the scheduler. The simulation results show that the TLQS is effective scheduler for WCDMA system
{"title":"Traffic load and QoS-oriented packet scheduling for WCDMA communications","authors":"Pei Li, Weilin Wu","doi":"10.1109/WOCN.2006.1666536","DOIUrl":"https://doi.org/10.1109/WOCN.2006.1666536","url":null,"abstract":"In future wireless communications, there will be a mixture of different traffic classes, which have their own load and quality-of-service (QoS) requirements. In this paper, a traffic load and QoS-oriented packet scheduling (TLQS) is proposed for WCDMA communications, which consider the bit error rate (BER), packet loss, delay and traffic load requirements. The BER requirement can be guaranteed by ideal power control, while the packet loss, delay and traffic load are guaranteed by proper packet scheduling. The TLQS is to schedule the transmission of multimedia packets in the way that the TLQS introduces the traffic load and QoS to deciding the priority of the packets, which are more appropriate for designing the scheduler. The simulation results show that the TLQS is effective scheduler for WCDMA system","PeriodicalId":275012,"journal":{"name":"2006 IFIP International Conference on Wireless and Optical Communications Networks","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117245244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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