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2010 International Conference on Wireless Communications & Signal Processing (WCSP)最新文献

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Design and implementation of microwave amplifiers with matching transformers 带匹配变压器的微波放大器的设计与实现
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633454
Lin-Chuan Tsai, W. Lai
{"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}
引用次数: 0
Packet transmission for overlapped offset QAM 重叠偏移QAM的分组传输
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633835
Y. Dandach, P. Siohan
{"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}
引用次数: 7
Capacity bounds for relay-aided wireless multiple multicast with backhaul 带回程中继辅助无线多组播的容量界限
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633767
Jinfeng Du, Ming Xiao, M. Skoglund
{"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}
引用次数: 4
Analysis of cognitive radio spectrum access with finite primary users and infinite secondary users 有限主用户和无限次用户的认知无线电频谱接入分析
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633740
Qiming Tian, Chuan Ma, Guanding Yu, Aiping Huang
{"title":"Analysis of cognitive radio spectrum access with finite primary users and infinite secondary users","authors":"Qiming Tian, Chuan Ma, Guanding Yu, Aiping Huang","doi":"10.1109/WCSP.2010.5633740","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633740","url":null,"abstract":"In the cognitive radio networks, the users' spectrum access behavior determines the system capacity and spectrum utilization. There are three classical schemes for cognitive radio spectrum access: the random channel assignment, the reservation based assignment and the non-random channel assignment. In this paper, we study the performance of these schemes in a new scenario: a cognitive radio network with finite primary users and infinite secondary users. We model the users' behavior in these schemes by Markov chains. Moreover, the blocking, transition and dropping probabilities of the secondary users based on the user connection rate are derived as the performance metrics. Furthermore, we evaluate the secondary system capacity of these schemes. Numerical results show that the random and non-random channel assignments can get the lowest blocking probability, the reservation based assignment can get the lowest dropping probability, and the non-random channel assignment can provide the most system capacity and avoid the channel handoff for the secondary users.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"14 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":"116915323","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}
引用次数: 10
Frequency estimation method based on iterative filtering and pulse-pairs 基于迭代滤波和脉冲对的频率估计方法
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633313
He Yishan, Chen Yufan
{"title":"Frequency estimation method based on iterative filtering and pulse-pairs","authors":"He Yishan, Chen Yufan","doi":"10.1109/WCSP.2010.5633313","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633313","url":null,"abstract":"This paper analyzed the single tone frequency estimation method, using pulse pairs method to simplify the iterative filtering method. Statistical analysis of this algorithm is given and simulation is carried out in the presence of additive white Gaussian noise and colored noise. Through simulation, this algorithm is shown to be able to achieve CRB asymptotically in both environment mentioned above and perform efficiently even at short data length.","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":"116528786","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}
引用次数: 1
An efficient power allocation algorithm for relay assisted cognitive radio network 中继辅助认知无线网络中一种有效的功率分配算法
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5631742
Zhongjun Liu, Youyun Xu, Dongmei Zhang, Shaohua Guan
{"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}
引用次数: 15
Tradeoffs between handover performance and coverage range of relay stations in multihop cellular networks 多跳蜂窝网络中继站切换性能与覆盖范围的权衡
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633541
I. Jantarayat, M. Uthansakul, P. Uthansakul
{"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}
引用次数: 3
Real-time perceptual tempo estimation for music signal based on envelope autocorrelation 基于包络自相关的音乐信号实时感知节奏估计
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633730
Jianling Hu
{"title":"Real-time perceptual tempo estimation for music signal based on envelope autocorrelation","authors":"Jianling Hu","doi":"10.1109/WCSP.2010.5633730","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633730","url":null,"abstract":"Tempo and beats are very important elements in the perceptual music. This paper proposes a real-time perceptual tempo estimation algorithm, which calculates the envelope autocorrelation of the music signals firstly, and then a weighted tempo function based on envelope autocorrelation is constructed to estimate the music's perceptual tempo. The weighted tempo function is computed according to the peak amplitudes and positions of the envelope autocorrelation, which can demonstrate the real-time tempo information of the music signal, and its statistics can be used to represent the rhythm of the whole piece of music. Our experiment results show that the proposed weighted tempo function is highly related to the sense of auditory rhythm, and is capable of describing the music tempo changes at real-time.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"199 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":"121437207","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}
引用次数: 1
Missing data imputation based on compressive sensing for robust speaker identification 基于压缩感知的缺失数据输入鲁棒说话人识别
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633673
X. Rui
{"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}
引用次数: 1
Distributed precoding for multicell MIMO networks 多小区MIMO网络的分布式预编码
2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI: 10.1109/WCSP.2010.5633441
Yingquan Zou, Chunguo Li, Luxi Yang
{"title":"Distributed precoding for multicell MIMO networks","authors":"Yingquan Zou, Chunguo Li, Luxi Yang","doi":"10.1109/WCSP.2010.5633441","DOIUrl":"https://doi.org/10.1109/WCSP.2010.5633441","url":null,"abstract":"Distributed precoder for multicell multi-input multi-output (MEMO) networks is designed in this paper, which is implemented in a distributed manner instead of the central manner. Considering the interference can be transformed into the useful contribution, the criterion of maximizing the signal to leakage plus noise ratio (SLNR) is first introduced for the distributed precoder design. Moreover, in order to further reduce the channel state information feedback overhead, another precoder in terms of matching filter (MF) is then proposed for the distributed precoder design in multicell MIMO systems. Computer simulations have shown that the proposed precoding schemes outperform the existing method in terms of the achievable rate and the cumulative distribution function of the whole multicell MIMO system.","PeriodicalId":448094,"journal":{"name":"2010 International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"41 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":"121963460","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}
引用次数: 2
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