光通信研究, 2016 (5): 71, 网络出版: 2016-12-21  

压缩感知实现BBU-RRU之间的数据压缩

Data Compression Technology Between BBU and RRU with Compressed Sensing
作者单位
西安邮电大学 通信与信息工程学院, 西安 710121
摘要
在BBU-RRU(基带单元和射频单元)之间的下行链路中, 噪声对信号的影响比较小, 且信号存储需要大量的空间, 同时OFDM(正交频分复用)信号频域的稀疏特性满足压缩感知理论的要求。基于上述问题, 利用压缩感知理论实现了不同信噪比下OFDM信号的恢复, 并对其进行了性能分析。仿真结果表明, 该方法能节省将近5倍的信号存储所需空间。通过分析不同信噪比下恢复信号的损伤率和误比特率的特征可知, 其满足通信系统正常工作的需求。
Abstract
The influence of noise on the signal is small between the Base Band Unit and the Remote Radio Unit (BBU-RRU) in downlink and need a lot of space for storage. The sparseness of frequency domain of OFDM signal meets the requirement of the compressed sensing theory. Based on the above issues, this paper realizes OFDM signal reconstruction under different signal-to-noise ratios by using the compressed sensing theory. The simulation results show that this method can save nearly five times storage space of signal. Reconstruction signal has different damage rate and bit error rate under different signal-to-noise ratio, which meets the demand of communication system in the practical situation.

王军选, 李小平. 压缩感知实现BBU-RRU之间的数据压缩[J]. 光通信研究, 2016, 42(5): 71. WANG Jun-xuan, LI Xiao-ping. Data Compression Technology Between BBU and RRU with Compressed Sensing[J]. Study On Optical Communications, 2016, 42(5): 71.

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