Title :
Power Allocation for Distributed Turbo Product Codes (DTPC)
Author :
Obiedat, Esam A. ; Cao, Lei
Author_Institution :
Electr. Eng. Dept., Univ. of Mississippi, Oxford, MS, USA
Abstract :
In this paper we investigate the effect of power allocation on the performance of the Distributed Turbo Product Code (DTPC) system. We study the error propagation on distributed coding systems when the relay makes erroneous decisions and present a simple power allocation method to alleviate the effect of relay decoding errors on the iterative decoding at the destination. We validate this method with results of an exhaustive search and compare its performance with the fixed power assignments for DTPC system with Decode and Forward (DF) and Soft Decode and Forward (SDF) relaying protocols. Compared to the fixed power assignment, the proposed method for power allocation shows a performance gain of 1.2dB at 10-4 Bit Error Rate (BER).
Keywords :
decode and forward communication; error statistics; iterative decoding; product codes; protocols; turbo codes; BER; DTPC system; bit error rate; decode and forward relaying protocols; distributed turbo product code system; error propagation; fixed power assignments; iterative decoding; power allocation method; relay decoding errors; soft decode and forward relaying protocols; Bit error rate; Decoding; Encoding; Iterative decoding; Relays; Resource management; Signal to noise ratio;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE
Conference_Location :
Miami, FL
Print_ISBN :
978-1-4244-5636-9
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2010.5683288
