LTE上行系统中多用户配对算法

摘要

To solve the problem of precious uplink frequency resource and reuse of time-frequency re-source, a multi-user pairing algorithm is proposed. First we set a SINR (Signal to Interference plus Noise Ratio) threshold that only satisfied user can be scheduled. Then a multi-user pairing algorithm based on channel orthogonality and estimated SINR is derived. Theoretical analysis and simulation re-sults show that the algorithm outperforms other pair-ing algorithms as well as single-user system in cell throughput , especially in the cell -edge user throughput.%　　针对上行频率资源稀缺而需要采取时频资源复用的问题，提出一种多用户配对算法。算法首先指出用户信干噪比（SINR）达到规定的门限值时才可以进行配对操作，然后推导了在这样高SINR条件下，一种基于信道正交性和用户预估SINR的多用户配对算法。理论分析和仿真结果证明，该算法相对于单用户系统以及其他多用户配对算法，在小区吞吐量特别是小区边缘用户吞吐量方面有较大的提升。