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A partial-forward scheme for the half-duplex relay system is proposed, which transmits only a part of codewords by considering code and channel characteristics at the relay. Specifically, two partial cooperation schemes, decode-and-partial-forward and amplify-andpartial- forward schemes are considered and to overcome the shortcomings of these schemes an adaptive partial-forward scheme is proposed...
In this paper, a decode-and-partial-forward (DPF) scheme for the half-duplex relay system is proposed, which transmits only a part of codewords by considering code and channel characteristics at the relay. Furthermore, optimization of the time-division parameter in DPF scheme is performed to obtain performance improvement.
In this paper, we propose a construction method of rate-compatible block-type low-density parity-check (RC B-LDPC) codes using extending and puncturing, which works well over a wide range of code rates by decreasing the amount of puncturing nodes to mitigate the performance degradation at high rate range. RC B-LDPC code constructed by the proposed scheme to achieve the target code rates from 1/3 to...
In this paper, we show that irregular concatenated zigzag (ICZZ) codes are suitable as mother codes to support a wide range of code rates. We introduce the degree distribution matching method to derive the optimal puncturing and pruning patterns in order to achieve the rate-compatible target code rates of ICZZ code. By combining ICZZ code with the optimal puncturing and pruning patterns, new rate-compatible...
In this paper, we study and propose a puncturing algorithm of block-type low-density parity-check (B-LDPC) codes. This optimal puncturing algorithm is derived from the fact that puncturing of parity bits is equivalent to merging the check nodes. Furthermore, we propose a new decoding algorithm suitable for the punctured B-LDPC codes. This decoding algorithm needs not only smaller number of operations...
In this paper, we construct rate-compatible block-type low-density parity-check (B-LDPC) codes using splitting that cover a wide range of code rates from 1/3 to 4/5. They outperform other rate-compatible B-LDPC codes for all rates and can be decoded conveniently and efficiently. A strong motivation for proposing splitting scheme comes from the observation that the quality of the initial transmission...
In this paper, new rate-compatible punctured concatenated zigzag (RCPCZ) codes are proposed and analyzed by using the density evolution technique. This analysis gives the design criteria for the rate-compatible puncturing patterns and accordingly good puncturing patterns for constructing RCPCZ codes are obtained. Since RCPCZ codes are linear-time encodable and show capacity-approaching performance,...
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