In order to improve the performance of receiver, the technology of RAKE diversity receiving is usually adopted, which needs the exact channel estimation information.
为了提高接收机的性能，一般采用RAKE接收等分集合并措施，这就需要准确的信道估计信息。
In order to improve channel estimation's precision, in chapter 5, semi-blind channel estimation and detection using superimposed training's first-order statistics were studied.
第五章研究了基于一阶统计量的叠加训练序列的半盲信道估计方法，并结合检测结果来提高估计的精度。
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