The Effect of Block Interleaving in an LDPC - Turbo Concatenated Code
نویسنده
چکیده
ETRI Journal, Volume 28, Number 5, October 2006 ABSTRACT⎯The effect of block interleaving in a low density parity check (LDPC)-turbo concatenated code is investigated in this letter. Soft decoding can be used in an LDPC code unlike the conventional Reed-Solomon (RS) code. Thus, an LDPC-turbo concatenated code can show better performance than the conventional RS-turbo concatenated code. Furthermore, the performance of an LDPC-turbo code can be improved by using a block interleaver between the LDPC and turbo code. The average number of iterations in LDPC decoding can also be reduced by a block interleaver.
منابع مشابه
LDPC Coded Turbo Equalization for MIMO System
—In this paper, MIMO (Multiple-Input-Multiple Output) system based on turbo equalization techniques which LDPC (Low Density Parity Check) codes were outer code and STTC (Space Time Trellis Code) were employed as an inner code are studied. LDPC decoder and STTC decoder are connected through the interleaving and de-interleaving that updates each other's information repeatedly. On the receiver si...
متن کاملAnnex a Glossary
From: TM Synchronization and Channel Coding is used to protect the transfer frames against telemetry channel noise‐induced errors. Reference [3] describes the CCSDS Recommended Standard for TM Synchronization and Channel Coding, including specification of a convolutional code, a Reed‐ Solomon block‐oriented code, a concatenated coding system consisting of a convolutional inner code and a Reed‐S...
متن کاملA Correlation-Breaking Interleaving of Polar Codes
It’s known that the bit errors of polar codes with successive cancellation (SC) decoding are coupled. However, existing concatenation schemes of polar codes with other error correction codes rarely take this coupling effect into consideration. To achieve a better BER performance, a concatenation scheme, which divides all Nl bits in a LDPC block into Nl polar blocks to completely de-correlate th...
متن کاملIterative Equaliser and Ldpc Algorithms Using Space- Time Block Coded over Non-binary Fields Applied to Wireless Channel
The aim of this paper is to propose a new combination of turbo equalisation with Low Density Parity Check (LDPC) both over non-binary fields, concatenated with space time block coded over a wireless channel with QPSK modulation. A detail comparison with other communication methods such as turbo equalisation and binary LDPC decoding is included. This system produces a gain of 2 dB for a 3 10 = B...
متن کاملOn the Distribution of Low-Weight Codewords for Turbo Codes
We determine the generating function counting the asymptotic number of (minimal) codewords of low weight for standard parallel concatenated (turbo) code ensembles. We then show that the number of minimal codewords of weight up to some fixed constant follows in the limit of large block lengths a Poisson distribution. In analogy to the standard random graph model, we conjecture that this statemen...
متن کامل