Pub Date : 2010-11-11DOI: 10.1109/WCSP.2010.5633834
Yanjing Sun, Xue Liu
This paper presents wireless multi-hop Ad hoc networks based on OLSR protocol for the special environments in underground mine to improve existing coal mine wireless network deficiencies. It has the characteristics of high bandwidth, low latency, and easy deployment, compatibility with coal mine industrial Ethernet and multimedia transmission. We designed and implemented coal mine coverage network, safety wireless node and mobile ad hoc network route protocol. For routing protocol, we replace hop count route metric with expected transmission count to get a better performance. Experiments have been performed in a simulation environment in order to guide the MANET deployment in underground mine.
{"title":"Wireless multi-hop Ad hoc networks based on OLSR for underground coal mine","authors":"Yanjing Sun, Xue Liu","doi":"10.1109/WCSP.2010.5633834","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633834","url":null,"abstract":"This paper presents wireless multi-hop Ad hoc networks based on OLSR protocol for the special environments in underground mine to improve existing coal mine wireless network deficiencies. It has the characteristics of high bandwidth, low latency, and easy deployment, compatibility with coal mine industrial Ethernet and multimedia transmission. We designed and implemented coal mine coverage network, safety wireless node and mobile ad hoc network route protocol. For routing protocol, we replace hop count route metric with expected transmission count to get a better performance. Experiments have been performed in a simulation environment in order to guide the MANET deployment in underground mine.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134262532","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633702
Hongbin Chen
Energy efficiency is a primary concern in the design of algorithms and protocols for wireless sensor networks. For a long time, researchers have made great efforts to efficiently utilize the limited energy storage of sensors. Recently, it was shown that external energy resources can be harvested by the sensors in order to increase their lifetime. This paper elaborates on the role of recharging in energy efficiency for wireless sensor networks. Particularly, several energy efficiency scenarios with recharging are discussed. The new facets brought by recharging are highlighted. A representative example is provided to show the advantage of recharging in sensor networks. This paper is dedicated to serve as a tutorial which calls for more attention to the exciting research topic-recharging for wireless sensor networks.
{"title":"The role of recharging in energy efficiency for wireless sensor networks","authors":"Hongbin Chen","doi":"10.1109/WCSP.2010.5633702","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633702","url":null,"abstract":"Energy efficiency is a primary concern in the design of algorithms and protocols for wireless sensor networks. For a long time, researchers have made great efforts to efficiently utilize the limited energy storage of sensors. Recently, it was shown that external energy resources can be harvested by the sensors in order to increase their lifetime. This paper elaborates on the role of recharging in energy efficiency for wireless sensor networks. Particularly, several energy efficiency scenarios with recharging are discussed. The new facets brought by recharging are highlighted. A representative example is provided to show the advantage of recharging in sensor networks. This paper is dedicated to serve as a tutorial which calls for more attention to the exciting research topic-recharging for wireless sensor networks.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134067127","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633541
I. Jantarayat, M. Uthansakul, P. Uthansakul
Relay station is a recent approach for multihop cellular networks to increase a signal quality as well as support a high speed data transmission. The coverage range of relay station is determined by its transmit power and level of handover between relay station and its base station. This coverage range directly influences to handover performance. If number of handover increases, the expense of signaling overheads and capacity deficiency will be increased. In this paper, the investigation into number of handover related to coverage range of relay station is presented. In addition, various handover scenarios in cellular networks are also examined. The results indicate that the tradeoff between number of handover scenarios and coverage range depends on type of handover scenarios.
{"title":"Tradeoffs between handover performance and coverage range of relay stations in multihop cellular networks","authors":"I. Jantarayat, M. Uthansakul, P. Uthansakul","doi":"10.1109/WCSP.2010.5633541","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633541","url":null,"abstract":"Relay station is a recent approach for multihop cellular networks to increase a signal quality as well as support a high speed data transmission. The coverage range of relay station is determined by its transmit power and level of handover between relay station and its base station. This coverage range directly influences to handover performance. If number of handover increases, the expense of signaling overheads and capacity deficiency will be increased. In this paper, the investigation into number of handover related to coverage range of relay station is presented. In addition, various handover scenarios in cellular networks are also examined. The results indicate that the tradeoff between number of handover scenarios and coverage range depends on type of handover scenarios.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115535776","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633454
Lin-Chuan Tsai, W. Lai
A synthesizing method is proposed to design and implement wideband amplifiers in the microwave frequency range. The wideband amplifier is implemented by using Chebyshev matching transformers (CMT). In particular, the effective bandwidth of the CMT wideband amplifier increases 2.3GHz over the balance amplifier. The size of the CMT amplifier reduces to 30% of the balance amplifier. Two types of amplifier are built and tested. A methodology of designing the CMT amplifier is presented and implemented to validate this new method correct by measuring.
{"title":"Design and implementation of microwave amplifiers with matching transformers","authors":"Lin-Chuan Tsai, W. Lai","doi":"10.1109/WCSP.2010.5633454","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633454","url":null,"abstract":"A synthesizing method is proposed to design and implement wideband amplifiers in the microwave frequency range. The wideband amplifier is implemented by using Chebyshev matching transformers (CMT). In particular, the effective bandwidth of the CMT wideband amplifier increases 2.3GHz over the balance amplifier. The size of the CMT amplifier reduces to 30% of the balance amplifier. Two types of amplifier are built and tested. A methodology of designing the CMT amplifier is presented and implemented to validate this new method correct by measuring.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114791248","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633835
Y. Dandach, P. Siohan
Offset Quadrature Amplitude Modulation (OQAM) presents several advantages for single carrier and multicarrier transmission when combined with OFDM. However, as the transmitted pulse shapes have an offset and overlap together this may be detrimental for the transmission of frames with very short length. In this paper we show that, under certain conditions, a slight modification of the demodulation process permits a total recovery of the high spectral efficiency these systems can attain when there is no framing constraint.
{"title":"Packet transmission for overlapped offset QAM","authors":"Y. Dandach, P. Siohan","doi":"10.1109/WCSP.2010.5633835","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633835","url":null,"abstract":"Offset Quadrature Amplitude Modulation (OQAM) presents several advantages for single carrier and multicarrier transmission when combined with OFDM. However, as the transmitted pulse shapes have an offset and overlap together this may be detrimental for the transmission of frames with very short length. In this paper we show that, under certain conditions, a slight modification of the demodulation process permits a total recovery of the high spectral efficiency these systems can attain when there is no framing constraint.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114814416","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633446
Wen-Tao Zhang, L. Ye, Hongfan Zhao, S. Chai
Single and double E-plane metal insert irises are analyzed via Mode-Match-Method (MMM), and the position of the double irises is determined first, then single/double/hybrid metal insert filters are designed using the theory of network synthesis, the result demonstrates that hybrid metal insert filter is easier to fabricate because of its reasonable iris lengths. At last, the above three types of filters are analyzed by MMM, the result demonstrates that hybrid metal insert filter has better transmission characteristics than the single/double metal insert filter. The MMM results are also verified by the results of CST software.
{"title":"Design of waveguide E-plane hybrid metal insert filters for millimeter-wave application","authors":"Wen-Tao Zhang, L. Ye, Hongfan Zhao, S. Chai","doi":"10.1109/WCSP.2010.5633446","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633446","url":null,"abstract":"Single and double E-plane metal insert irises are analyzed via Mode-Match-Method (MMM), and the position of the double irises is determined first, then single/double/hybrid metal insert filters are designed using the theory of network synthesis, the result demonstrates that hybrid metal insert filter is easier to fabricate because of its reasonable iris lengths. At last, the above three types of filters are analyzed by MMM, the result demonstrates that hybrid metal insert filter has better transmission characteristics than the single/double metal insert filter. The MMM results are also verified by the results of CST software.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116707789","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633532
Z. Pan, Gang Wu, Shu Fang, D. Lin
The single-carrier frequency division multiple access (SC-FDMA) is employed in the 3GPP Long Term Evolution (LTE) standard as the uplink transmission scheme. In this paper, we propose a novel successive interference cancellation (SIC) detector for multiuser detection in multiuser Multiple Input Multiple Output (MIMO) SC-FDMA system with co-channel interference (CCI). Compared to conventional SIC receiver, the proposed scheme can overcome the error propagation problem in the interference cancellation process via soft-decision output combined with channel decoder. And we also study the impact of the channel estimate error on the receiver and investigated it via simulation. Simulation results show that the proposed algorithm is significantly superior to the conventional frequency domain linear equalization based receiver in terms of bit error rate (BER) performance even the channel statement information is imperfect at the receiver.
3GPP LTE (Long Term Evolution)标准采用单载波频分多址(SC-FDMA)作为上行传输方案。在本文中，我们提出了一种新的连续干扰消除(SIC)检测器，用于具有同信道干扰(CCI)的多用户多输入多输出(MIMO) SC-FDMA系统的多用户检测。与传统的SIC接收机相比，该方案通过软判决输出与信道解码器相结合，克服了干扰消除过程中的误差传播问题。研究了信道估计误差对接收机的影响，并进行了仿真研究。仿真结果表明，在信道语句信息不完全的情况下，该算法在误码率(BER)性能方面明显优于传统的基于频域线性均衡的接收机。
{"title":"Practical soft-SIC detection for MIMO SC-FDMA system with co-channel interference","authors":"Z. Pan, Gang Wu, Shu Fang, D. Lin","doi":"10.1109/WCSP.2010.5633532","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633532","url":null,"abstract":"The single-carrier frequency division multiple access (SC-FDMA) is employed in the 3GPP Long Term Evolution (LTE) standard as the uplink transmission scheme. In this paper, we propose a novel successive interference cancellation (SIC) detector for multiuser detection in multiuser Multiple Input Multiple Output (MIMO) SC-FDMA system with co-channel interference (CCI). Compared to conventional SIC receiver, the proposed scheme can overcome the error propagation problem in the interference cancellation process via soft-decision output combined with channel decoder. And we also study the impact of the channel estimate error on the receiver and investigated it via simulation. Simulation results show that the proposed algorithm is significantly superior to the conventional frequency domain linear equalization based receiver in terms of bit error rate (BER) performance even the channel statement information is imperfect at the receiver.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116049373","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}
This paper considers a cognitive radio model where the secondary users (SUs) apply cooperative relay to fulfill the communication demand. Specially, under the constraint that the interference power introduced to primary users (PUs) is kept under a tolerable threshold, we investigate the system throughput maximization problem during the cognitive relay transmission. In order to make the formulated problem feasible to solve, Maclaurin expansions are employed as substitutions. Moreover, based on convex optimization theory, an iterative power allocation algorithm repeated between the powers of secondary source node and relay node is developed to obtain the optimal solution. Corroborant numerical examples are provided to illustrate the quick convergence behavior of the proposed algorithm and the superiority of applying cooperative relay in cognitive radio networks is also presented.
{"title":"An efficient power allocation algorithm for relay assisted cognitive radio network","authors":"Zhongjun Liu, Youyun Xu, Dongmei Zhang, Shaohua Guan","doi":"10.1109/WCSP.2010.5631742","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5631742","url":null,"abstract":"This paper considers a cognitive radio model where the secondary users (SUs) apply cooperative relay to fulfill the communication demand. Specially, under the constraint that the interference power introduced to primary users (PUs) is kept under a tolerable threshold, we investigate the system throughput maximization problem during the cognitive relay transmission. In order to make the formulated problem feasible to solve, Maclaurin expansions are employed as substitutions. Moreover, based on convex optimization theory, an iterative power allocation algorithm repeated between the powers of secondary source node and relay node is developed to obtain the optimal solution. Corroborant numerical examples are provided to illustrate the quick convergence behavior of the proposed algorithm and the superiority of applying cooperative relay in cognitive radio networks is also presented.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115012761","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633767
Jinfeng Du, Ming Xiao, M. Skoglund
We investigate the capacity bounds for relay-aided two-source two-destination wireless networks with backhaul support between source nodes. Each source multicasts its own message to all destinations with the help of an intermediate relay node, which is full-duplex and shared by both sources. We are aiming to characterize the capacity region of this model given discrete memoryless Gaussian channels. We establish three capacity upper bounds by relaxing the cut-set bound, and by extending two capacity bounds originally derived for MIMO relay channels. We also present one lower bound by using decoding-and-forward relaying combined with network beam-forming.
{"title":"Capacity bounds for relay-aided wireless multiple multicast with backhaul","authors":"Jinfeng Du, Ming Xiao, M. Skoglund","doi":"10.1109/WCSP.2010.5633767","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633767","url":null,"abstract":"We investigate the capacity bounds for relay-aided two-source two-destination wireless networks with backhaul support between source nodes. Each source multicasts its own message to all destinations with the help of an intermediate relay node, which is full-duplex and shared by both sources. We are aiming to characterize the capacity region of this model given discrete memoryless Gaussian channels. We establish three capacity upper bounds by relaxing the cut-set bound, and by extending two capacity bounds originally derived for MIMO relay channels. We also present one lower bound by using decoding-and-forward relaying combined with network beam-forming.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115169220","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 : 2010-11-11DOI: 10.1109/WCSP.2010.5633673
X. Rui
In this paper, the method of missing data imputation based on the emergent field of compressive sensing for the front end of a speaker identification system in noisy conditions is investigated. Firstly, noisy speech signals are transformed into Gammatone spectrum by using cochlear filtering; then, unreliable spectral components are reconstructed given an incomplete set of reliable ones; finally, speaker features with auditory model are extracted from reconstructed Gammatone spectral data. Experimental results demonstrate that our method can improve the identification accuracy of speaker identification in noisy environments.
{"title":"Missing data imputation based on compressive sensing for robust speaker identification","authors":"X. Rui","doi":"10.1109/WCSP.2010.5633673","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633673","url":null,"abstract":"In this paper, the method of missing data imputation based on the emergent field of compressive sensing for the front end of a speaker identification system in noisy conditions is investigated. Firstly, noisy speech signals are transformed into Gammatone spectrum by using cochlear filtering; then, unreliable spectral components are reconstructed given an incomplete set of reliable ones; finally, speaker features with auditory model are extracted from reconstructed Gammatone spectral data. Experimental results demonstrate that our method can improve the identification accuracy of speaker identification in noisy environments.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124857174","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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