Data Combination over Physical Layer Using Network Coding with PUM Turbo Codes

• 作者: Hani Attar
• 来源期刊: 电脑和通信(英文)
• 学科: 工学
• 关键词: FORWARD ERROR CORRECTION Network Coding Unit Memory TURBO Code
• 年，卷（期）: dnhtxyw_2017,（6）
• 页码范围: 32-44
• 页数: 13页
• 分类号: TN91

摘要

The Base Station (BS) or access point is the building block of wireless networks, so, we propose exploiting it together with the Network Coding (NC) principle. NC suffers from the complexity of the decoding processes, i.e., complicated Jordan Gaussian Elimination (JGE) processes. So, this paper proposes a deterministic NC algorithm to reduce the number of sequential network decoding steps, and hence minimizing the complexity of JGE process resulting to better time delay and processing time. We propose an algorithm that combines higher number of the transmitted packets resulting to better data-rate but worse Bet Error Rate (BER). However, using such strong Forward error correction channel code, which is Partial Unit Memory Turbo Code (PUMTC) results to minimize the losses in the BER to a very acceptable lever, in fact, in Decode-and-Forward (DF) BS, the BER can be regarded as minimum. Simulation results, for both Amplify-and-Forward (AF) and DF BS schemes using PUMTC based on (8, 4, 3, 8) component codes, confirm that using PUMTC mitigates the problem of noise aggregation resulting from applying NC in the proposed schemes.