2010 IEEE International Conference on Communications最新文献_第2页

Performance Degradation Due to MAI in OFDMA-Based Cognitive Radio 基于ofdma的认知无线电中MAI导致的性能下降

2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5501830

Liwen Yu, L. Milstein, J. Proakis, B. Rao

引用次数: 4

Pattern-Based DFA for Memory-Efficient and Scalable Multiple Regular Expression Matching 基于模式的DFA用于内存高效和可扩展的多正则表达式匹配

2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5501973

Junchen Jiang, Yang Xu, Tian Pan, Yi Tang, B. Liu

引用次数: 10

Efficient Cooperative Caching with Improved Performance in Wireless Mesh Networks 无线网状网络中提高性能的高效协同缓存

2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5501921

M. Denko, Thabo K. R. Nkwe, M. Obaidat

引用次数: 8

Voice Capacity of Cognitive Radio Networks 认知无线电网络的语音容量

2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502635

Subodha Gunawardena, W. Zhuang

{"title":"Voice Capacity of Cognitive Radio Networks","authors":"Subodha Gunawardena, W. Zhuang","doi":"10.1109/ICC.2010.5502635","DOIUrl":"https://doi.org/10.1109/ICC.2010.5502635","url":null,"abstract":"Providing multimedia services over cognitive radio (CR) networks has become an interesting research topic during past few years. As multimedia applications require specific quality of service (QoS) guarantees, supporting multimedia applications to secondary users over a CR network is a challenging task due to the random nature of resource availability. In this paper, we consider a secondary system operating over a timeslotted primary system with multiple channels and secondary users accessing the channels at the spectrum holes without interfering with primary users. We derive the voice capacity of the CR system based on the theories of effective bandwidth (EB) and effective capacity (EC). The capacity is represented in terms of the number of simultaneous independent voice calls that the system can support, providing stochastic delay guarantee. It is shown that (i) the analytical results match well with simulation results and stays slightly lower than the simulation results due to the conservative nature of the EB and EC theories, and (ii) the mean duration of channel being unavailable to secondary users has a significant impact on the system capacity. With proper medium access control, this analysis can help to develop a call admission control policy for QoS provisioning in CR networks.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74743566","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: 20

Convergence of Distributed Power Control 分布式电源控制的收敛性

2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5501816

Qianxi Lu, Tao Peng, Wenbo Wang, C. Hu

引用次数: 0

Multiple-Encoder Layered Space-Time-Frequency Architecture with QRM-MLD Detection 基于QRM-MLD检测的多编码器分层空时频结构

2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502076

Yuanliang Huang, K. Higuchi, M. Sawahashi

{"title":"Multiple-Encoder Layered Space-Time-Frequency Architecture with QRM-MLD Detection","authors":"Yuanliang Huang, K. Higuchi, M. Sawahashi","doi":"10.1109/ICC.2010.5502076","DOIUrl":"https://doi.org/10.1109/ICC.2010.5502076","url":null,"abstract":"In this paper, in order to achieve the available spatial, temporal and frequency diversities, and also make the system implementation feasible for high speed orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) multiplexing, a novel LSTF transmitter architecture with multiple channel encoders is proposed with each independently coded information sub-stream being threaded in the three-dimensional (3-D) space-time-frequency transmission resource array. The performance of a receiver consisting of a maximum-likelihood detector with QR decomposition and M-algorithm (QRM-MLD) is exploited, by employing irregular low-density parity-check (LDPC) code as the channel code. The threaded distribution of each coded information sub-stream in the proposed LSTF makes it to achieve the spatial, temporal and frequency diversities the same as the conventional single-encoder LSTF where coding is applied across the whole information stream, and simulation results show that the performance of the proposed multiple-encoder LSTF architecture is very close to that of the conventional single-encoder LSTF. However, due to the use of multiple parallel encoders/decoders with a shorter codeword length, the proposed LSTF architecture has much lower hardware processing speed and complexity than the conventional LSTF.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73067903","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

Voice Synchronization across Heterogeneous Telephony Systems: Problem and Solutions 跨异构电话系统的语音同步:问题和解决方案

2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502433

Hsiao-Pu Lin, Hung-Yun Hsieh

{"title":"Voice Synchronization across Heterogeneous Telephony Systems: Problem and Solutions","authors":"Hsiao-Pu Lin, Hung-Yun Hsieh","doi":"10.1109/ICC.2010.5502433","DOIUrl":"https://doi.org/10.1109/ICC.2010.5502433","url":null,"abstract":"As IP telephony gains more popularity, interworking with conventional PSTN telephony has also gained more importance. In particular, an increasing number of new telephony services now involves both packet-switched (IP telephony) and circuit-switched (PSTN telephony) voice legs in one call session. One common problem that arises for enabling such new services is the need for synchronization of voice streams that traverse through heterogeneous telephony systems. In this paper, we first identify the key role of voice synchronization across heterogeneous telephony systems for services such as seamless handover between WLAN and cellular networks and multi-party audio conferencing with video overlay. We then explain the challenges in synchronizing circuit-switched and packet-switched voice streams, including codec distortion, packet losses, line noises, and overlapping utterances. To achieve voice synchronization, we proceed to investigate three different approaches based on digital speech processing techniques in the waveform, cepstrum, and spectrum domains. Finally, we compare the performance benefits and tradeoffs of different approaches, thus motivating further research along this direction.","PeriodicalId":6405,"journal":{"name":"2010 IEEE International Conference on Communications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75696137","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

Controlling Sensing Error for Cognitive PANs with 1-Limited Packet Scheduling 基于1限分组调度的认知pan感知误差控制

2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5501784

J. Misic, V. Mišić

引用次数: 1

Performance Analysis of Coded Cooperation under Nakagami-m Fading Channels Nakagami-m衰落信道下编码合作性能分析

2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5502093

Ankur Bansal, P. Garg

引用次数: 8

Improving the QoE of Citrix Thin Client Users 提高Citrix瘦客户端用户的QoE

2010 IEEE International Conference on Communications Pub Date : 2010-05-23 DOI: 10.1109/ICC.2010.5501891

D. Schlosser, B. Staehle, A. Binzenhöfer, Björn Boder

引用次数: 18