A study of Multi-level Distributed Source Coding for Compress-and-forward Relaying Systems
|關鍵字:||合作式通訊;壓縮傳遞;分散式訊源編碼;同位子法;多層級編碼;cooperative communication;compress-and-forward;distributed source coding;parity approach;multi-level coding|
In this thesis, we propose a new information relaying approach for cooperative communication with low source-to-destination channel SNR. The relay first performs scalar quantization on received source signal, and then jointly apply the parity approach of distributed source coding and multi-level coding prior to the transmission to destination with channel code. The destination estimates the received relay signal by a joint decoding of the signals from both the source node and relay node, followed by decoding of the source message using both the received source signal and reconstruction relay signal. Also proposed is a signal estimation scheme based on the turbo-like iterative source-channel decoding. Simulation results indicate that proposed relaying system yields better performances when source-to-destination channel SNR is low.
|Appears in Collections:||Thesis|
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