The main goal of this work is to provide a unified theory of QSTBCs for four transmit antennas and one (or more) receive antennas. The thesis consists of two main parts: In the first part we analyze the QSTBCs transmission without any channel kno

matlab实现了五类灰色关联度模型的计算,有信道编码，调制，信道估计等，数学方法是部分子空间法。- matlab implements five gray correlation degree computing model, Channel coding, modulation, channel estimation, Mathematics is part of the subspace.

matlab实现了五类灰色关联度模型的计算,BP神经网络的整个训练过程,单径或多径瑞利衰落信道仿真。- matlab implements five gray correlation degree computing model, The entire training process BP neural network, Single path or multipath Rayleigh fading channel simulation.