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引用次数: 10
摘要
本文提出了一种新的MIMO OFDM自适应多用户检测方案，我们称之为AMUD MIMO OFDM。它将自适应最小均方误差多用户检测方案与信道先验信息和空域干扰消除相结合。仿真结果表明，联合信道参数估计比单独信道参数估计具有更好的性能。该算法的和速率容量接近MIMO理论上限(在信噪比为20dB时为21.5 bits/s/Hz)，表明该算法适用于上行信道，在上行信道中移动站的功率传输是一个约束。误码率性能表明，与非自适应MIMO OFDM相比，8 x 8 AMUD的MIMO OFDM提供了2dB的信噪比增益。
Adaptive MMSE multiuser receivers in MIMO OFDM wireless communication
This paper presents a novel adaptive multiuser detection scheme for MIMO OFDM, which we refer to as AMUD MIMO OFDM. It combines the adaptive minimum mean square error multiuser detection scheme with prior information of the channel and interference cancelation in the spatial domain. Simulation results show that joint channel parameters estimation has good performance compared to individual parameter estimation. The developed algorithm sum rate capacity is close to MIMO theoretical upper bound (21.5 bits/s/Hz at an SNR of 20dB) which indicates its applicability to the uplink channel, where power transmission at the mobile station is a constraint. The BER performance shows that an 8 x 8 AMUD MIMO OFDM provides a 2dB SNR gain as compared to non adaptive MIMO OFDM.
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