ulti-Cell Channel Estimation and Multi-Cell Joint Detection in TD-SCDMA System
In Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system, the Steiner algorithm is used to perform channel estimation for the serving cell based upon the midamble in each timeslot, and joint detection (JD) is employed to eliminate intra-cell interference for both uplink and downlink. However, since single-cell JD (SJD) only deals with intra-cell interference and is not able to cancel out inter-cell interference, the users on cell edge typically achieve much worse link performance than those near the base station. Therefore, multi-cell JD (MJD) is proposed to further mitigate inter-cell interference. In this paper, the performance of multi-cell channel estimation (MCE) and multi-cell joint detection (MJD) techniques for TD-SCDMA evolved downlink are investigated and analyzed. It is shown that minimum mean-square-error (MMSE) multi-cell channel estimator and MMSE multi-cell equalizer can reduce downlink block error ratio (BLER) for the users both on the cell center and on the cell edge.
Xiang Zhang Wenbo Wang Shuping Chen Chunyi Wang
Wireless Signal Processing and Network Laboratory Key Laboratory of Universal Wireless Communication Wireless Signal Processing and Network Laboratory Key Laboratory of Universal Wireless Communication
国际会议
北京
英文
1-5
2010-06-25（万方平台首次上网日期，不代表论文的发表时间）