Results 121 to 130 of about 225,472 (170)

QoS Provisioning Relay Selection in Random Relay Networks

IEEE Transactions on Vehicular Technology, 2011
In this paper, we propose an analytical framework for determining the outage probability of random and best relay selection schemes given a Poisson field of relay nodes and the presence of path loss and fading. For relay selection, relays geographically close to the source and destination are preferred to others.
Wan Choi, Kaibin Huang
exaly   +4 more sources

Incremental Relaying with Partial Relay Selection

IEICE Transactions on Communications, 2010
We propose an incremental relaying protocol in conjunction with partial relay selection with the aim of making efficient use of the degrees of freedom of the channels as well as improving the performance of dual hop relaying with partial relay selection (DRPRS).
Vo Nguyen Quoc Bao, Hyung Yun Kong
openaire   +1 more source

Selective Relay-Activation for Conditional DF Relaying

IEEE Transactions on Communications, 2014
This paper considers a conditional decode-and-forward (DF) based cooperative system where a source (S) with multiple (M) antennas transmits information to a single-antenna destination (D) with the help of multiple (L ≤ M-1) single-antenna relays ({R_i}).
Shenghui Song 0001, Q. T. Zhang, Khaled Ben Letaief   +2 more
openaire   +2 more sources

A Novel Relay Selection Algorithm for Relaying Networks

2009 IEEE 70th Vehicular Technology Conference Fall, 2009
Cooperative diversity has been recently proposed as a way to form virtual antenna arrays that provide dramatic gains in slow fading wireless environments. In a multiple-relay network, the opportunistic relay selection scheme has been shown to outperform any other strategy that involves the conventional all-participate scheme.
Nien-En Wu, Wei-Chieh Huang, Hsueh-Jyh Li   +2 more
openaire   +1 more source

On the selection of relays' positions in diamond relay networks

Proceedings of the 6th International Wireless Communications and Mobile Computing Conference, 2010
Diamond relay network is a kind of efficient cooperative network, in which the source user selects two neighbors as relays and cooperates with both of them. In our previous work, we have studied its transmission rates for different coding and relaying schemes and proved that the performance of SRP scheme (Spatial Reuse Pattern) is better than others ...
Qing Wang 0004, Pingyi Fan, Matthew R. McKay, Khaled Ben Letaief   +3 more
openaire   +1 more source

On the Position Selection of Relays in Diamond Relay Networks

IEEE Transactions on Communications, 2011
The diamond relay network is an efficient cooperative networking configuration in which the source node cooperates with two selected neighbors. For such networks, we investigate the impact of the relay positioning on the performance. In particular, considering an opportunistic protocol based on the use of relaying buffers, we provide sets of ...
Qing Wang 0004, Pingyi Fan, Matthew R. McKay, Khaled Ben Letaief   +3 more
openaire   +2 more sources

Relay Selection Algorithm for Cognitive Relay Network

Wireless Personal Communications, 2017
In the cognitive relay network, due to the different fading characteristics of communication links, not all relay nodes have constructive impacts on the system performance. A relay selection algorithm is proposed to obtain the minimum relay transmission power while satisfying the secondary user SINR requirements and interference temperature constraints.
Yong Jin 0002, Yunshan Hou, Zhentao Hu, Xianxing Liu   +3 more
openaire   +1 more source

Relay selection in multiple clustered relay networks

2015 Wireless Telecommunications Symposium (WTS), 2015
We consider the downlink of a realistic cellular network composed of multiple clusters, each of which includes multiple relays and a destination terminal. In this scenario, the interference among the clusters is a critical issue, affecting the end-to-end performance of the system significantly.
Woo Suk Kim, Woo Jin Kim, Hae Sol Lee, Il-Min Kim 0001, Dong In Kim, Seokki Kim, Kwangae Lim   +6 more
openaire   +1 more source

Alliances with Optimal Relay Selection

2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, 2007
ALLIANCES is a recently proposed cooperative random access protocol for wireless networks. In this paper we modify the original model to include user location information. We also derive pair-wise error probability (PEP) under Rayleigh flat fading channel and a power-law attenuation environment.
Hailong Yang, Athina P. Petropulu
openaire   +1 more source

On relay selection in frequency selective channels

2011 Conference Record of the Forty Fifth Asilomar Conference on Signals, Systems and Computers (ASILOMAR), 2011
We consider relay selection in cooperative relay networks with frequency selective fading, and focus on a system where multiple decode-and-forward relays share a single channel orthogonal to the source. We propose a relay selection scheme and end-to-end transciever architecture which employs a simple decision feedback equalizer, and we show ...
Qingxiong Deng, Andrew G. Klein
openaire   +1 more source