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The multiple input multiple output (MIMO) technology increases the capacity of wireless communication system remarkably. However, it is unrealistic to deploy distributed antenna system (DAS) owing to several problems, including power imbalance, frequency difference and time delay difference between different data streams. In this paper, we analyze MIMO system capacity theoretically at first. Then...
In multi-antenna relay networks, how to assign source-relay pairs is still a challenge. In this paper, we propose a simple distributed relay-assignment algorithm for multi-antenna relay networks, which exploits the ability of AOA (angle of arrival) estimating in a multi-antenna terminal. The proposed algorithm based on an opportunistic relaying model uses RTS packet to estimate AOA of the source and...
Multiuser Zero Forcing Beamforming (MU-ZFB) can be adopted to exploit the multiuser spatial multiplexing gain and diversity gain in downlink by spatial multiuser scheduling. On the other hand, multiuser joint subcarrier allocation can obtain multiuser diversity gain in frequency domain. In this paper, a novel joint Spatial and Frequency Proportional Fairness (SFPF) scheduler is proposed to achieve...
For multiuser MIMO system, zero forcing beamforming (ZFB) can be adopted to exploit the multiuser spatial multiplexing gain and diversity gain in downlink by spatial multiuser scheduling. On the other hand, multiuser joint subcarrier allocation can obtain multiuser diversity gain in frequency domain. In this paper, a novel joint spatial and frequency proportional fairness (SFPF) scheduler is proposed...
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