An Adaptive Multiuser MIMO Receive Algorithm with Radial Space-Division Multiple Access in OFDM System
16 May 2010
This paper presents a low-complexity multiuser MIMO detection algorithm. The MIMO receiver exploits Radial space-Division Multiple Access (RDMA) principle. The MIMO multiusers are so paired and scheduled, which are in distinguishable radial space-divisions with respect to the MIMO receiver. With the Channel State Information (CSI) and corresponding eigenvalue analysis, the MIMO receiver can selectively deploy the Linear Minimum Mean Square Error (LMMSE) detection or Successive Interference Cancelation (SIC) for the MIMO multiusers. This reduces the complexity for the multiuser detection, by possibly maintaining the performance. The investigation is provided for the Orthogonal Frequency Division Multiplex (OFDM) system. Throughout this paper, an IEEE 802.16e, Worldwide Interoperability Microwave Access (WiMAX), link level simulator is exploited for the uplink performance evaluation.
