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An Efficient Signaling for Multi-mode Transmission in Multi-user MIMO

Nima Seifi (Institutionen för signaler och system, Kommunikationssystem) ; Tony Ottosson (Institutionen för signaler och system, Kommunikationssystem) ; Mats Viberg (Institutionen för signaler och system, Signalbehandling) ; Mikael Coldrey ; Andreas Wolfgang
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP'10), Dallas, USA, Mar. 2010. (1520-6149). p. 3402-3405. (2010)
[Konferensbidrag, refereegranskat]

In this paper the downlink of a multi-user MIMO (MUMIMO) system with multi-mode transmission is considered. We propose a low-complexity algorithm for selecting users and the corresponding number of data streams to each user, denoted as user transmission mode (UTM). The selection is only based on the average received signal-to-noise ratio (SNR) from the base station (BS) for each user. This reduces the overall amount of feedback for scheduling, as opposed to techniques that assume perfect instantaneous channel state information (CSI) from all users. Analytical average throughput approximations are derived for each user at different UTMs. Simulation results demonstrate that the proposed algorithm provides performance close to dirty paper coding (DPC) with considerably reduced feedback.

Denna post skapades 2010-01-09. Senast ändrad 2014-09-02.
CPL Pubid: 106025


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