Interference suppression in TDD/CDMA cellular systems with asymmetric traffic using MVDR beamforming

Chiung Jang Chen*, Li-Chun Wang

*此作品的通信作者

研究成果: Conference article同行評審

4 引文 斯高帕斯(Scopus)

摘要

The primary advantage of the TDD system is to accommodate asymmetric traffic by allocating different numbers of uplink and downlink time slots. However, in the TDD/CDMA cellular system, uplink signals may suffer strong interference from the downlink transmission of neighboring base stations. This kind of opposite direction interference has adverse impact on the TDD/CDMA system performance. In this paper, we propose to apply the MVDR beamforming technique to suppress the opposite direction interference. We evaluate the uplink performance of the proposed technique by simulation. Moreover, by jointly employing transmit beamforming in all asynchronous cells, the TDD/CDMA cellular system can allow different rates of asymmetry in different cells. Thus, each cell can design its own pattern of slot allocation.

原文English
文章編號1040319
頁(從 - 到)141-145
頁數5
期刊IEEE Vehicular Technology Conference
56
發行號1
DOIs
出版狀態Published - 24 九月 2002
事件56th Vehicular Technology Conference - Vancouver, BC, Canada
持續時間: 24 九月 200228 九月 2002

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