Pub Date : 2000-12-17DOI: 10.1109/ICPWC.2000.905784
G. Khani, J. Cances, V. Meghdadi
Among the different receiver architectures which are able to cope with the multiple access interference (MAI) impediments, the decorrelator structure based on linear filtering is a good potential solution since it leads to a near-far resistant algorithm in CDMA systems with a moderate complexity. However, since, the ideal asynchronous decorrelator requires the observation of the entire input bit sequence, it is not suitable for practical applications. In this paper, we propose some methods using correction for both edges of the finite observed window.
{"title":"A comparison study between different sliding window decorrelating detectors for asynchronous CDMA-UMTS","authors":"G. Khani, J. Cances, V. Meghdadi","doi":"10.1109/ICPWC.2000.905784","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905784","url":null,"abstract":"Among the different receiver architectures which are able to cope with the multiple access interference (MAI) impediments, the decorrelator structure based on linear filtering is a good potential solution since it leads to a near-far resistant algorithm in CDMA systems with a moderate complexity. However, since, the ideal asynchronous decorrelator requires the observation of the entire input bit sequence, it is not suitable for practical applications. In this paper, we propose some methods using correction for both edges of the finite observed window.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114983299","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 : 2000-12-17DOI: 10.1109/ICPWC.2000.905769
S. Jayasimha, P.K. Singh
Two design procedures, one based on switched pulse shapes, and the other based on alternating projections in the time and frequency domain, are used to obtain interference and jitter-free or reduced interference and jitter (near-Nyquist) pulse-shaping filters. The latter method, that incorporates both frequency- and time- domain constraints into the linear filter design procedure, allows common pulse-shaping filters to be used for both QPSK and 8-PSK used in contemporary satellite modems.
{"title":"Design of Nyquist and near-Nyquist pulses with spectral constraints","authors":"S. Jayasimha, P.K. Singh","doi":"10.1109/ICPWC.2000.905769","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905769","url":null,"abstract":"Two design procedures, one based on switched pulse shapes, and the other based on alternating projections in the time and frequency domain, are used to obtain interference and jitter-free or reduced interference and jitter (near-Nyquist) pulse-shaping filters. The latter method, that incorporates both frequency- and time- domain constraints into the linear filter design procedure, allows common pulse-shaping filters to be used for both QPSK and 8-PSK used in contemporary satellite modems.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"507 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123421529","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 : 2000-12-17DOI: 10.1109/ICPWC.2000.905802
S. Chakrabati, A. Chaturvedi
A slow frequency hopping code diversity system with a bandwidth-efficient modulation scheme based on balanced incomplete block (BIB) design - the Steiner design - has been proposed. The proposed system uses more than one frequency bin simultaneously to transmit a symbol. The system performance is evaluated and compared with the MFSK slow frequency hopping code diversity system for a multiuser environment considering non-fading and frequency non-selective slowly time varying Rayleigh fading channels. The performance has also been studied with matched frequency hopping (MFH), an efficient addressing technique for slow frequency-selective dispersive channels.
{"title":"Application of Steiner design for capacity enhancement of frequency hopping spread spectrum wireless systems","authors":"S. Chakrabati, A. Chaturvedi","doi":"10.1109/ICPWC.2000.905802","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905802","url":null,"abstract":"A slow frequency hopping code diversity system with a bandwidth-efficient modulation scheme based on balanced incomplete block (BIB) design - the Steiner design - has been proposed. The proposed system uses more than one frequency bin simultaneously to transmit a symbol. The system performance is evaluated and compared with the MFSK slow frequency hopping code diversity system for a multiuser environment considering non-fading and frequency non-selective slowly time varying Rayleigh fading channels. The performance has also been studied with matched frequency hopping (MFH), an efficient addressing technique for slow frequency-selective dispersive channels.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115502721","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 : 2000-12-17DOI: 10.1109/ICPWC.2000.905837
R. K. Mallik, A. K. Gogoi
Digital communication systems operating in the ELF/VLF range are strongly affected by atmospheric noise which has an impulsive component on a white Gaussian background. We derive an optimum detector for coherent M-ary signaling in the presence of such noise. In the special case of coherent binary signaling, the performance of a suboptimum linear detector is analyzed.
{"title":"An optimum detector for coherent M-ary signaling in the presence of impulsive noise","authors":"R. K. Mallik, A. K. Gogoi","doi":"10.1109/ICPWC.2000.905837","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905837","url":null,"abstract":"Digital communication systems operating in the ELF/VLF range are strongly affected by atmospheric noise which has an impulsive component on a white Gaussian background. We derive an optimum detector for coherent M-ary signaling in the presence of such noise. In the special case of coherent binary signaling, the performance of a suboptimum linear detector is analyzed.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125552681","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 : 2000-12-17DOI: 10.1109/ICPWC.2000.905767
M. Coupechoux, V. Braun
The application of a space-time coding (STC) scheme using two transmit antennas in a GSM related TDMA mobile radio communications system is discussed. By way of example, we consider the simple space-time block code presented by S. Alamouti (see IEEE Journal on Selected Areas in Communications, vol.46, p.1451-8, 1998) in the presence of multipath environments, intersymbol interference (ISI) and additive white Gaussian noise (AWGN). Hard output Viterbi equalizers are used at the receiver site to combat the dispersive effects of ISI and multipath propagation. Computer simulation results for multi-tap block fading channels indicate a performance advantage of one diversity order over the conventional single transmit antenna scheme. In preliminary computer simulation results for the enhanced data rate for GSM evolution (EDGE) system, gains versus single antenna transmission schemes in the order of 2 dB (1.3 dB) at the block error rate 0.01 (0.1) have been obtained with ideal frequency hopping and the modulation and coding scheme MCS1 (GMSK modulation and a convolutional code with rate 0.53) in typical urban Rayleigh fading environments. The same gains in block error rate performance were achieved with a computationally simpler delay diversity scheme. Further work aims at completing a thorough performance comparison of different transmit diversity schemes for possible application in the EDGE system.
讨论了双发射天线空时编码(STC)方案在GSM TDMA移动通信系统中的应用。举例来说，我们考虑了S. Alamouti提出的简单空时分组码(参见IEEE Journal on Selected Areas in Communications, vol.46, p.1451-8, 1998)在存在多路径环境、码间干扰(ISI)和加性高斯白噪声(AWGN)的情况下。硬输出维特比均衡器用于接收端，以对抗ISI和多径传播的色散效应。多分接分块衰落信道的计算机仿真结果表明，与传统的单发射天线方案相比，该方案具有一个分集阶的性能优势。在GSM演进(EDGE)系统增强数据速率的初步计算机仿真结果中，在典型的城市瑞利衰落环境下，在理想跳频和调制编码方案MCS1 (GMSK调制和0.53卷积码)下，在分组错误率为0.01(0.1)的情况下，与单天线传输方案相比，获得了2 dB (1.3 dB)左右的增益。用一种计算更简单的延迟分集方案获得了相同的块错误率性能。进一步的工作旨在完成对EDGE系统中可能应用的不同发射分集方案的全面性能比较。
{"title":"Space-time coding for the EDGE mobile radio system","authors":"M. Coupechoux, V. Braun","doi":"10.1109/ICPWC.2000.905767","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905767","url":null,"abstract":"The application of a space-time coding (STC) scheme using two transmit antennas in a GSM related TDMA mobile radio communications system is discussed. By way of example, we consider the simple space-time block code presented by S. Alamouti (see IEEE Journal on Selected Areas in Communications, vol.46, p.1451-8, 1998) in the presence of multipath environments, intersymbol interference (ISI) and additive white Gaussian noise (AWGN). Hard output Viterbi equalizers are used at the receiver site to combat the dispersive effects of ISI and multipath propagation. Computer simulation results for multi-tap block fading channels indicate a performance advantage of one diversity order over the conventional single transmit antenna scheme. In preliminary computer simulation results for the enhanced data rate for GSM evolution (EDGE) system, gains versus single antenna transmission schemes in the order of 2 dB (1.3 dB) at the block error rate 0.01 (0.1) have been obtained with ideal frequency hopping and the modulation and coding scheme MCS1 (GMSK modulation and a convolutional code with rate 0.53) in typical urban Rayleigh fading environments. The same gains in block error rate performance were achieved with a computationally simpler delay diversity scheme. Further work aims at completing a thorough performance comparison of different transmit diversity schemes for possible application in the EDGE system.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128567170","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 : 2000-12-17DOI: 10.1109/ICPWC.2000.905906
N. Prasad
The present generation of the wireless LAN (WLAN) products are implemented on Personal Computer Memory Card International Association (PCMCIA) cards (also called PC card) that are used in laptops, computers and portable devices. The technical issues for WLAN systems are size, power consumption, bit rate, aggregate throughput, coverage range and interference robustness. Scarcity of spectrum is the biggest issue in wireless communication. The challenge is to serve the largest number of users with a specified system quality. For this purpose, network architecture and the study thereof play a very important role. This paper first discusses the considered WLAN, after which explanations of WLAN system design are given, taking into consideration critical issues such as coverage, cell planning, interference, power management and security, especially for IEEE 802.11 WLAN based on direct sequence spread spectrum (DS-SS) in the 2.4 GHz ISM band.
{"title":"IEEE 802.11 system design","authors":"N. Prasad","doi":"10.1109/ICPWC.2000.905906","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905906","url":null,"abstract":"The present generation of the wireless LAN (WLAN) products are implemented on Personal Computer Memory Card International Association (PCMCIA) cards (also called PC card) that are used in laptops, computers and portable devices. The technical issues for WLAN systems are size, power consumption, bit rate, aggregate throughput, coverage range and interference robustness. Scarcity of spectrum is the biggest issue in wireless communication. The challenge is to serve the largest number of users with a specified system quality. For this purpose, network architecture and the study thereof play a very important role. This paper first discusses the considered WLAN, after which explanations of WLAN system design are given, taking into consideration critical issues such as coverage, cell planning, interference, power management and security, especially for IEEE 802.11 WLAN based on direct sequence spread spectrum (DS-SS) in the 2.4 GHz ISM band.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127635999","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 : 2000-12-17DOI: 10.1109/ICPWC.2000.905849
A. Chheda
The capacity gain expected from next-generation CDMA (IS-2000, UMTS) networks over current (IS-95) networks is attributed to fast forward power control and transmit diversity. We study the forward link capacity of a 3.6864 Mcps direct spread (DS) CDMA system for 9600 bit/s voice traffic. Three transmit diversity schemes are considered, orthogonal transmit diversity (OTD), phase sweeping transmit diversity (PSTD), and space-time spreading (STS). The study indicates IS-2000 radio configuration 7 (RC7) with STS will maximize capacity. On comparing STS to the no-transmit diversity cases, the gain is 3.35 dB when averaged over the two IMT-2000 pedestrian channel models and 0.45 dB when averaged over the two IMT-2000 vehicular models. Due to lower rate convolutional coding, RC6 users will require lower forward link power than RC7 users. However, the fewer available Walsh codes in the RC6 system will likely lower RC6 Erlang capacity below RC7 Erlang capacity at typical system operating levels - blocking 1% to 5%.
{"title":"On the forward link capacity of a wide band DS-CDMA system with transmit diversity","authors":"A. Chheda","doi":"10.1109/ICPWC.2000.905849","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905849","url":null,"abstract":"The capacity gain expected from next-generation CDMA (IS-2000, UMTS) networks over current (IS-95) networks is attributed to fast forward power control and transmit diversity. We study the forward link capacity of a 3.6864 Mcps direct spread (DS) CDMA system for 9600 bit/s voice traffic. Three transmit diversity schemes are considered, orthogonal transmit diversity (OTD), phase sweeping transmit diversity (PSTD), and space-time spreading (STS). The study indicates IS-2000 radio configuration 7 (RC7) with STS will maximize capacity. On comparing STS to the no-transmit diversity cases, the gain is 3.35 dB when averaged over the two IMT-2000 pedestrian channel models and 0.45 dB when averaged over the two IMT-2000 vehicular models. Due to lower rate convolutional coding, RC6 users will require lower forward link power than RC7 users. However, the fewer available Walsh codes in the RC6 system will likely lower RC6 Erlang capacity below RC7 Erlang capacity at typical system operating levels - blocking 1% to 5%.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124717302","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 : 2000-12-17DOI: 10.1109/ICPWC.2000.905776
D. Famolari, P. Agrawal
The emergence of short-range low power RF communication technologies such as Bluetooth are expanding the model of personal communications to include the personal area network (PAN). This PAN will integrate with larger wide area networks (WAN) to provide network connectivity and Internet access to and between, individuals and devices. In this paper, we describe an architecture and present link performance results for a Bluetooth PAN embedded within a wireless LAN (WLAN) environment. This type of architecture can bridge the PAN to wide-area IP networks, allowing information access and distribution across ad hoc mobile environments. We investigate the link performance of Bluetooth in the presence of WLAN radio interference and present measured link performance results of such an embedded system.
{"title":"Architecture and performance of an embedded IP Bluetooth personal area network","authors":"D. Famolari, P. Agrawal","doi":"10.1109/ICPWC.2000.905776","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905776","url":null,"abstract":"The emergence of short-range low power RF communication technologies such as Bluetooth are expanding the model of personal communications to include the personal area network (PAN). This PAN will integrate with larger wide area networks (WAN) to provide network connectivity and Internet access to and between, individuals and devices. In this paper, we describe an architecture and present link performance results for a Bluetooth PAN embedded within a wireless LAN (WLAN) environment. This type of architecture can bridge the PAN to wide-area IP networks, allowing information access and distribution across ad hoc mobile environments. We investigate the link performance of Bluetooth in the presence of WLAN radio interference and present measured link performance results of such an embedded system.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126924891","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 : 2000-12-17DOI: 10.1109/ICPWC.2000.905852
F. Shueh, Z.-E.P. Liu, W.-S.E. Chen
High data-rate and variable data-rate services are important features in third-generation mobile communication systems. International Mobile Telecommunication-2000 (IMT-2000) in the International Telecommunication Union (ITU) sets up the air interface objectives to support wideband data services as high as 2 Mb/s for limited coverage and mobility, and 144 kb/s to 384 kb/s for full coverage and mobility, with the same quality as in a fixed telecommunication network. Direct sequence code division multiple access (DS-CDMA) is widely investigated and accepted as the wireless access technique of IMT-2000 for its high spectrum efficiency, high flexibility, and high availability in offering different and time-varying data-rate services. No frequency planning among cells and no orthogonality coordination among users in the cell also make the DS-CDMA suitable for system implementation despite the need for rigorous transmit power control (TPC). In this paper, the channel assignment scheme of the forward link is investigated since the channelization codes are a scarce resource in the wireless environment. The FEX (Fair Efficient and eXchangeable) scheme is proposed to efficiently assign the orthogonal codes and to reduce the blocking rate of the system. The simulation result shows that the FEX scheme achieves its best performance for the system under medium/high data-rate requests.
高数据速率和可变数据速率业务是第三代移动通信系统的重要特征。国际电信联盟(ITU)的国际移动通信-2000 (IMT-2000)设定了空中接口目标，以支持高达2 Mb/s的有限覆盖和移动性宽带数据业务，以及144 kb/s至384 kb/s的全覆盖和移动性，其质量与固定电信网络相同。直接序列码分多址(DS-CDMA)作为IMT-2000的无线接入技术，以其高频谱效率、高灵活性和高可用性提供不同时变数据速率的服务而被广泛研究和接受。尽管需要严格的发射功率控制(TPC)，但小区间没有频率规划，小区内用户之间没有正交性协调，这也使得DS-CDMA适合系统实现。由于信道化码在无线环境中是一种稀缺资源，本文对前向链路的信道分配方案进行了研究。为了有效地分配正交码，降低系统的阻塞率，提出了FEX (Fair Efficient and eXchangeable)方案。仿真结果表明，FEX方案在中/高数据速率下能够达到系统的最佳性能。
{"title":"A fair, efficient, and exchangeable channelization code assignment scheme for IMT-2000","authors":"F. Shueh, Z.-E.P. Liu, W.-S.E. Chen","doi":"10.1109/ICPWC.2000.905852","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905852","url":null,"abstract":"High data-rate and variable data-rate services are important features in third-generation mobile communication systems. International Mobile Telecommunication-2000 (IMT-2000) in the International Telecommunication Union (ITU) sets up the air interface objectives to support wideband data services as high as 2 Mb/s for limited coverage and mobility, and 144 kb/s to 384 kb/s for full coverage and mobility, with the same quality as in a fixed telecommunication network. Direct sequence code division multiple access (DS-CDMA) is widely investigated and accepted as the wireless access technique of IMT-2000 for its high spectrum efficiency, high flexibility, and high availability in offering different and time-varying data-rate services. No frequency planning among cells and no orthogonality coordination among users in the cell also make the DS-CDMA suitable for system implementation despite the need for rigorous transmit power control (TPC). In this paper, the channel assignment scheme of the forward link is investigated since the channelization codes are a scarce resource in the wireless environment. The FEX (Fair Efficient and eXchangeable) scheme is proposed to efficiently assign the orthogonal codes and to reduce the blocking rate of the system. The simulation result shows that the FEX scheme achieves its best performance for the system under medium/high data-rate requests.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131765435","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 : 2000-12-17DOI: 10.1109/ICPWC.2000.905783
Gang Li, Yu Jin
In this paper, we propose an algorithm for tracking the phase and amplitude of frequency nonselective fading channels. In contrast to conventional channel estimation techniques, which do not take enough advantage of the statistical characteristics of the received radio signal, this algorithm combines a conventional channel estimator with a speed estimator which can adaptively control the mode of the interpolation technique, the bandwidth of the smoothing filter or the step length of the adaptive filter (e.g. the LMS algorithm) in order to track the variant fading channel. Simulation results demonstrate the improved performance of this algorithm compared with the conventional channel estimator under the variant fading channel.
{"title":"A speed estimation based two-stage symbol aided channel estimator for frequency nonselective variant fading channel","authors":"Gang Li, Yu Jin","doi":"10.1109/ICPWC.2000.905783","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905783","url":null,"abstract":"In this paper, we propose an algorithm for tracking the phase and amplitude of frequency nonselective fading channels. In contrast to conventional channel estimation techniques, which do not take enough advantage of the statistical characteristics of the received radio signal, this algorithm combines a conventional channel estimator with a speed estimator which can adaptively control the mode of the interpolation technique, the bandwidth of the smoothing filter or the step length of the adaptive filter (e.g. the LMS algorithm) in order to track the variant fading channel. Simulation results demonstrate the improved performance of this algorithm compared with the conventional channel estimator under the variant fading channel.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133919624","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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