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An Efficient Signal Detection Method for Uplink Multiuser Systems Based on Collaborative Spatial Multiplexing
Tae Ho IM Mi Kyung KONG Sungwook YU Yong Soo CHO
IEICE TRANSACTIONS on Communications
Publication Date: 2011/04/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
uplink multiuser systems, MIMO, OSIC, QRD-M, CSM,
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In this letter, we propose an efficient signal detection method for uplink multiuser systems based on collaborative spatial multiplexing (CSM). The proposed method achieves near-optimal performance and shows only 0.8 dB loss at the target frame error rate (FER) of 10-2. Moreover, the error performance of each user is almost the same in the proposed method, which is an important property in a multiuser MIMO system where each user's error performance must satisfy some fixed error rate criteria.