Tradeoff Analysis of Partial Zero-Forcing Beamforming in Large Random Spectrum Sharing Networks
Refereed conference paper presented and published in conference proceedings

香港中文大學研究人員
替代計量分析
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其它資訊
摘要In wireless networks, the availability of multiple transmitting antennas can be exploited in several ways. One way is to reduce the interference to unintended receivers by placing beamforming nulls in those directions, as is done in zero-forcing beamforming. Another is to boost the received signal strength at the desired receiver using "matched" transmit beamforming. This work studies a partial zero-forcing beamforming scheme that combines these two traditional transmission schemes, and examines its performance gain in large random spectrum sharing networks. Specifically, beamforming vectors are designed to null the aggregate interference towards a number of selected primary receivers and to boost the received signal strength at the intended receiver. Considering Poisson distributed users and Rayleigh fading channels, the statistical characterizations of signal and interference are analyzed and the optimal number of nulled receivers is discussed. The simulation results show that by employing partial zero-forcing beamforming with a judiciously chosen number of nulls, the permissible density of secondary transmitters can be maximized while protecting the successful transmission probabilities of individual networks.
著者Cai R, Ching PC, Davidson TN
會議名稱IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
會議開始日22.06.2014
會議完結日25.06.2014
會議地點Toronto
會議國家/地區加拿大
會議論文集題名2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
詳細描述organized by IEEE Signal Processing Soceity,
出版年份2014
出版社IEEE
頁次75 - 79
國際標準書號978-1-4799-4903-8
國際標準期刊號2325-3789
語言英式英語
關鍵詞Interference, Receivers, Array signal processing, Vectors, Transmitters, Partial transmit sequences, Wireless communication
Web of Science 學科類別Engineering; Engineering, Electrical & Electronic; Telecommunications

上次更新時間 2020-20-10 於 01:27