电子科技大学学报2009，Vol.38Issue(6)：921-926,6.DOI:10.3969/j.issn.1001-0548.2009.06.006
IDMA下行链路的传输及简化接收方法
Downlink Transmission and Simplified Receiving Scheme for IDMA
摘要
Abstract
According to the high complexity of user end receiver, a downlink transmission and receiving scheme for interleave-division multiple access (IDMA) system is proposed based on time-division duplexing (TDD) mode and time-reversal (TR) technique. The proposed scheme uses the time-reversed version of the channel impulse responses (CIR) obtained from the uplink to pre-process the transmitted signal at base station, and the multiple input-single output (MISO) configuration. The multi-user interference (MAI), co-channel interference (CCI), and mitigate inter-symbol interference (ISI) are alleviated by exploiting the weak correlations of fading channels for different user ends (UE), the spatial and temporal focusing of TR. Therefore, only a simple one-finger receiver is needed at the UE. The UE can be simplified by canceling the iteration operation and moving the channel estimator from the receiver of UE to the receiver of the base station. Thus the data detection of the proposed scheme is rather simple compared with the traditional IDMA.关键词
下行链路/交织多址/多用户检测/时间反转Key words
downlink/IDMA/MUD/TR分类
信息技术与安全科学引用本文复制引用
熊兴中,胡剑浩..IDMA下行链路的传输及简化接收方法[J].电子科技大学学报,2009,38(6):921-926,6.基金项目
国家自然科学基金(60496313,60872030) （60496313,60872030）
国防重点实验室基金(91400204040704) （91400204040704）
