Multiple Symbol Differential Detection for Noncoherent Communications With Large-Scale Antenna Arrays
Multiple Symbol Differential Detection for Noncoherent Communications With Large-Scale Antenna Arrays
复制标题
DOI：
10.1109/lwc.2017.2764018
复制
发表时间：
2018-04
影响因子：
6.3
通讯作者：
Yue Wang;Z. Tian
中科院分区：
文献类型：
--
作者：
Yue Wang;Z. Tian
对于大型天线通信，非相干差分检测是避免昂贵的信道估计的一种有吸引力的选择，但随着天线数量的增加，它不能最大限度地收集性能优势。为了实现理想的性能复杂性权衡，本文开发了多符号差分检测（MSDD），并对单输入多输出（SIMO）系统进行了简单的实现，可以在信道相干时间内联合检测一个符号块。采用广义似然比检验准则，使信息符号和未知信道的似然函数都最大化。推导了简单的MSDD-SIMO检测器的计算公式，其性能可与基于训练的相干检测相媲美。
For communications over large-scale antennas, noncoherent differential detection is an attractive option for avoiding expensive channel estimation, but it cannot maximally collect the performance benefits as the antenna number increases. For a desired performance-complexity tradeoff, this letter develops multiple symbol differential detection (MSDD) with simple implementation for single-input multiple-output (SIMO) systems, which jointly detects a block of symbols within the channel coherence time. The generalized likelihood ratio test criterion is adopted that maximizes the likelihood function over both the information symbols and the unknown channels. Simple formulas of the MSDD-SIMO detector are derived, whose performance is competitive to training-based coherent detection.