FDSS通信系统的最优自参考空间分集处理

Optimum self-reference spatial diversity processing for FDSS system

目的研究获得最大信噪比意义上的自参考波束成形的方法。方法用全部频段中的信息估计波束向量。结果提出了两种基于内在互相关特性,采用随机循环码的盲自参考最佳波束形成方法:一种是通过计算所有的波形向量共同形成一个单一的广义特征向量;另一种方法针对并行处理独立地计算每一个波形向量。结论理论分析和仿真表明,这两种方法在误码率上比已有的其他方法更好,且更接近最优值。

Aim To study some blind self-reference optimum beamforming methods tailored for the FDSS signalling scheme. Methods The proposed methods are to use the information of all the frequency bins jointly to yield optimum beamforming in the sense of maximum SINR. Results Two blind self-reference optimum beamforming methods tailored for the FDSS signalling scheme using the trivial repetition code are derived based on the inherent crosscorrelation properties present among all the frequency bands. One method computes all the beamvectors jointly performing a single generalized eigenvector computation. The other calculates each beamvector independently aiming at a parallel implementation. Conclusion The two methods analyzed in detail and tested via simulations are compared to other existing methods in terms of bit error rate, outperforming them and showing a performance close to the optimum value.