A Subspace Detection Method of Space-Time Block Codes for Ultra-wideband Communications
超宽带通信中模拟空时码的一种子空间检测方法

In this paper, a subspace-based detection method is proposed for analog space-time codes wedded with ultra-wideband (UWB) transmissions. Without estimating the channels at the receiver, the proposed algorithm yields the estimation of transmitted symbols by minimizing some quadratic form built on the orthogonality between signal and noise subspaces. Simulations in flat-faded application scenarios show that, the subspace method can achieve the same diversity order with the coherent reception, and outperforms the noncoherent decoder in existence with multiple successive space-time codes being decoded jointly.