2011 8th International Symposium on Wireless Communication Systems最新文献_第10页

An FPGA implementation architecture for decoding of polar codes 极性码译码的FPGA实现架构

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125398

Alptekin Pamuk

引用次数: 122

Throughput performance of incremental decode-and-forward using infra-structured relays and rate allocation 使用基础结构中继和速率分配的增量译码转发的吞吐量性能

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125319

H. Alves, G. Brante, R. Souza

引用次数: 2

Coordination of regenerative relays and direct users in wireless cellular networks 无线蜂窝网络中再生中继和直接用户的协调

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125276

C. Thai, P. Popovski

{"title":"Coordination of regenerative relays and direct users in wireless cellular networks","authors":"C. Thai, P. Popovski","doi":"10.1109/ISWCS.2011.6125276","DOIUrl":"https://doi.org/10.1109/ISWCS.2011.6125276","url":null,"abstract":"The area of wireless cooperation/relaying has recently been significantly enriched by the ideas of wireless network coding (NC), which bring substantial gains in spectral efficiency. These gains have mainly been demonstrated in scenarios with two-way relaying. Inspired by the ideas of wireless NC, recently we have proposed techniques for coordinated direct/relay (CDR) transmissions. These techniques embrace the interference among the communication flows to/from direct and relayed users, leveraging on the fact that the interference can be subsequently canceled. Hence, by allowing simultaneous transmissions, spectral efficiency is increased. In our prior work, we have considered CDR with non-regenerative relay that uses Amplify-and-Forward (AF). In this paper we consider the case of regenerative Decode-and-Forward (DF) relay. This refers also to joint decoding of the interfering flows received over a multiple-access channel. Our analysis shows that the assumption of regenerative relaying brings new parametrization of the CDR schemes, such that the the transmission times used by each node are subject to optimization. We show how these parameters should be chosen if the sum-rate needs to be optimized. Our results confirm the high gains in spectral efficiency over the reference schemes.","PeriodicalId":414065,"journal":{"name":"2011 8th International Symposium on Wireless Communication Systems","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134511324","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

Channel estimation and frequency domain equalization for IEEE 802.15.4a communication system IEEE 802.15.4a通信系统的信道估计和频域均衡

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125331

C. Medina, R. Neto

引用次数: 1

Cross-layer design of multirate/multiuser wireless networks with channel-aware scheduling 信道感知调度的多速率/多用户无线网络的跨层设计

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125430

L. Carrasco, G. Femenias, J. Ramis

引用次数: 1

Self-interference aware MMSE filter design for a cellular multi-antenna two-way relaying scenario 蜂窝多天线双向中继场景下的自干扰感知MMSE滤波器设计

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125350

Holger Degenhardt, Timo Unger, A. Klein

{"title":"Self-interference aware MMSE filter design for a cellular multi-antenna two-way relaying scenario","authors":"Holger Degenhardt, Timo Unger, A. Klein","doi":"10.1109/ISWCS.2011.6125350","DOIUrl":"https://doi.org/10.1109/ISWCS.2011.6125350","url":null,"abstract":"A single cell scenario with different multi-antenna nodes, i.e., a base station and several mobile stations, is considered. An intermediate multi-antenna relay station is used to support the bidirectional communications. In such a scenario, the required data rates for up - and downlink are typically different which is considered by introducing asymmetric rate requirements. Non-regenerative two-way relaying is applied and the nodes can subtract the back-propagated self-interference. To fully utilize this capability of the nodes for the transceive filter design at the relay station, an MMSE based transceive filter is derived which does not suppress self-interference. Thus, the required number of antennas at the relay station is reduced. Additionally, the transceive filter is optimized for asymmetric rate requirements by introducing a weighting parameter. Furthermore, an alternating optimization between the transceive filter at the relay station and the transmit and receive filters at the nodes is introduced to fulfill the asymmetric rate requirements and to increase the achievable sum rates. Simulation results show that the proposed filter design at the nodes and at the relay station requires less antennas and achieves higher sum rates compared to conventional approaches.","PeriodicalId":414065,"journal":{"name":"2011 8th International Symposium on Wireless Communication Systems","volume":"45 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133391113","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

Joint power and backhaul bits allocation for coordinated multi-point transmission 协调多点传输的联合功率和回程位分配

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125313

Hazem M. Soliman, Ahmed A. Naguib, Omar A. Nasr, M. Khairy, K. Elsayed

引用次数: 5

Application of coordinated beam selection in heterogeneous LTE-advanced networks 协同波束选择在异构LTE-advanced网络中的应用

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125446

J. Giese, M. A. Amin, S. Brueck

引用次数: 12

Performance analysis of 802.11 DCF parameters which support QoS in emergency scenarios 应急场景下支持QoS的802.11 DCF参数性能分析

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125431

A. Wolff, C. Wietfeld

{"title":"Performance analysis of 802.11 DCF parameters which support QoS in emergency scenarios","authors":"A. Wolff, C. Wietfeld","doi":"10.1109/ISWCS.2011.6125431","DOIUrl":"https://doi.org/10.1109/ISWCS.2011.6125431","url":null,"abstract":"In case of an emergency, first responders need to establish a communication network at the area of incidence. To support upcoming multimedia services for emergency personnel, a communication technology which provides high data rates is required. At presence the most common wireless communication technology is IEEE 802.11, which provides sufficient data rates for emergency communication. Due to the popularity of IEEE 802.11 networks, existing networks at the incident scene cause harsh conditions for wireless communications. For first respon-ders, a reliable communication infrastructure is crucial. Hence the applied communication technology must provide Quality of Service (QoS). Existing QoS mechanisms, like IEEE 802.11e are designed for multimedia applications. In this paper, we present a new set of parameters for the DCF to support QoS in emergency scenarios. We propose six novel priority classes for heterogeneous types of emergency communication. All types of emergency communication are prioritized over legacy IEEE 802.11 communication. The performance of the new parameter set is analyzed through an analytical model based on Markov chains and is validated through simulations. The results lead to the conclusion that our proposed parameter set provides a reliable communication network for emergency scenarios, even with existing interference networks.","PeriodicalId":414065,"journal":{"name":"2011 8th International Symposium on Wireless Communication Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132401420","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: 6

Adaptive iterative decision feedback with constellation constraints and soft-output detection for MIMO systems 基于星座约束的MIMO系统自适应迭代决策反馈与软输出检测

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125437

Peng Li, R. D. Lamare

引用次数: 2