Analysis of Full Volterra and Sparse Volterra Nonlinear Equalization for Downlink LTE System

作者：Mallouki Nasreddine; Nsiri Bechir; Mhatli Sofien; Ghanbarisabagh Mohammad^*; Hakimi Walid; Ammar Mahmoud

来源：Wireless Personal Communications, 2016, 89(4): 1413-1432.

DOI：10.1007/s11277-016-3325-6

• LTE
• RLS
• Full Volterra
• Sparse Volterra

In this work, we propose Full Volterra and Sparse Volterra channels equalization algorithms for downlink LTE system. For estimation purpose, the LTE standard provides known data as pilot symbols and exploits them through a coherent detection to improve system performance. The references symbols location is similar to diamond pattern through time and frequency domain. Our goal is to show how to use the Full Volterra and Sparse Volterra equalizers over frequency domain in order to mitigate linear and nonlinear effects introduced by power amplifier and multipath channel. Downlink LTE Performances System in term of BLER, EVM (%) and Throughput versus SNR are presented and discussed. Then we compare our results with basic RLS equalizer curves. Moreover, it is shown that the Full Volterra and Sparse Volterra models can significantly reduce interferences and nonlinear effects and consequently improve the performances of LTE Downlink System.

• 出版日期2016-8