Analysis of Full Volterra and Sparse Volterra Nonlinear Equalization for Downlink LTE System
| Autor: | Mohammad Ghanbarisabagh, Walid Hakimi, Mahmoud Ammar, Bechir Nsiri, Sofien Mhatli, Nasreddine Mallouki |
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| Rok vydání: | 2016 |
| Předmět: |
Computer science
Amplifier Equalization (audio) 020206 networking & telecommunications 02 engineering and technology 01 natural sciences Computer Science Applications Term (time) Nonlinear system Nonlinear equalization Control theory Frequency domain 0103 physical sciences Telecommunications link 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering 010301 acoustics Algorithm Throughput (business) |
| Zdroj: | Wireless Personal Communications. 89:1413-1432 |
| ISSN: | 1572-834X 0929-6212 |
| DOI: | 10.1007/s11277-016-3325-6 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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