MIMO系統(tǒng)在空時二維相關(guān)萊斯快衰落信道下的性能
Performance of MIMO System under Spatiotemporal Correlated Fast Rician Fading
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摘要: 與準靜態(tài)獨立的瑞利衰落信道模型相比較，在MIMO(Multi-Input Multi-Output)系統(tǒng)中，實際信道更趨向于空時相關(guān)萊斯快衰落?？紤]到MIMO系統(tǒng)的收發(fā)分集優(yōu)勢以及收發(fā)兩端天線陣列的空時相關(guān)性，在簡單論述了MIMO系統(tǒng)和信道模型的基礎(chǔ)上，該文利用多變量統(tǒng)計學理論，推導出MIMO系統(tǒng)在空時相關(guān)萊斯快衰落信道下平均成對差錯概率上界的閉合表達式，并探討了信道特性對系統(tǒng)性能的影響，然后給出相應仿真結(jié)果。
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關(guān)鍵詞:
- MIMO;空時編碼;萊斯衰落;空時相關(guān)
Abstract: Compared with the quasi-static rayleigh fading model, in MIMO (Multi-Input Multi-Output) systems, the practical channel is better for the spatial correlated fast Rician fading. Considering the transmit and receive diversity advantage in MIMO system and spatiotemporal correlation in transmitter and receiver arrays, based on the simple discussion about the MIMO system and channel model, this paper derive the close-form solution of the upper bound of the average pairwise error probability of the MIMO system under spatiotemporal correlated fast Rician fading by use of multivariate statistics, and the effect of the characteristic of the mobile channel on the system performance is discussed. Finally, the simulation results are shown. -
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