MIMO relay selection with suboptimal power allocation transmission over cooperative communication networks

Yi Sian Wu*, Chia Hung Yeh, Wen Yu Tseng, Wan Jen Huang, Min Kuan Chang, Ruey Nan Yeh, Chiu Lan Chu, Po Yi Sung

*此作品的通信作者

研究成果: 書貢獻/報告類型會議論文篇章

摘要

In order to enhance the relay's performance, and use the resource efficiently, a multiple input multiple output (MIMO) relay selection scheme based on amplify-and-forward (AF) cooperative system is proposed. In this paper, we consider the diversity combining at MIMO relays, and provide a condition to maximize the overall output signal-to-noise ratio (SNR). In this condition, the ineffective relays will be excluded in sequence from the cooperation; therefore the unused relays can be reallocated to other users. In the proposed system model, we use the maximal ratio combining (MRC) at MIMO relay, and employ the best channels from each relay to the destination. Each relay transmits the signal with identical power; meanwhile, the total power allocated to the source and the selected relays is set by suboptimal distribution. Simulation results indicate that the effect of bit error rate (BER) through the relay selection is similar to the scheme which applies all relays, but the amounts of used relay decreased. And the proposed MIMO relay scheme is superior to the single input single output (SISO) one about 7dB. Therefore, the relay resource could be used more efficiently than we employ all relay. In addition, the MIMO relay scheme can enhance the relay's performance.

原文英語
主出版物標題Security-Enriched Urban Computing and Smart Grid - Second International Conference, SUComS 2011, Proceedings
頁面203-211
頁數9
DOIs
出版狀態已發佈 - 2011
對外發佈
事件2nd International Conference on the Emerging Areas of Security-Enriched Urban Computing and Smart Grids, SUComS 2011 - Hualien, 臺灣
持續時間: 2011 9月 212011 9月 23

出版系列

名字Communications in Computer and Information Science
223 CCIS
ISSN(列印)1865-0929

會議

會議2nd International Conference on the Emerging Areas of Security-Enriched Urban Computing and Smart Grids, SUComS 2011
國家/地區臺灣
城市Hualien
期間2011/09/212011/09/23

ASJC Scopus subject areas

  • 電腦科學(全部)
  • 數學(全部)

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