In future wireless communication systems, multiple-input multiple-output (MIMO) technique and multi-user scheduling may play a key role in enhancing link reliability and spectral efficiency. In addition, linear signal...
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ISBN:
(纸本)9781479941452
In future wireless communication systems, multiple-input multiple-output (MIMO) technique and multi-user scheduling may play a key role in enhancing link reliability and spectral efficiency. In addition, linear signal processing is near-optimal when the number of the antennas becomes very large in the next generation wireless network. In this paper, we aim to investigate overall outage performance of multi-user MIMO broadcast system using minimum mean squared error receivers. Several schedulingalgorithms are considered over Rayleigh fading channel. Tight and closed-form upper bounds of the overall outage probabilities are derived for two round-robin schedulingalgorithms and two feedback-based opportunisticschedulingalgorithms. Our analysis indicates that there exists an performance gap between opportunisticschedulingalgorithm and stream-specific opportunistic scheduling algorithm. This gap is related to the number of transmit data streams N_t and the number of users K, and the gap becomes larger as N_t and K increase.
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