一种基于LTE-A系统的PUCCH SINR测量算法

A Measurement Method of PUCCH SINR in LTE-A Systems

针对现有LTE-A系统中PUCCH的信干噪比测量局限于信道格式且误差较大的问题,引入一种基于符号重构的信干噪比测量算法。该算法利用基带均衡处理得到的软符号,进行CQI译码或HARQ判决,再利用译码比特进行调制符号的重构,利用重构符号和均衡符号计算信干噪比。利用此算法可以准确地测量LTE-A系统中PUCCH各种格式的SINR值,从而为上行功控提供有效的参考,提高上行接收机性能。

According to the limitations of channel format and high error in the PUCCH SINR measurement in existing LTE-A systems, a SINR measurement algorithm based on symbol reconstruction is introduced. Based on the soft symbols processed by baseband equalization, CQI decoding or HARQ decision is performed. By using the decoded bits, the modulated symbols are reconstructed. Then, the reconstructed symbols and the equalized symbols are used to calculate the SINR. The proposed method can accurately measure the SINR values of different formats of PUCCH in LTE-A systems, provide an effective reference to uplink power control, and improve the uplink receiver performance.