Structured coding designA low density parity check (LDPC) code may have performance that approaches the Shannon limit in coping with noise and jamming in transmission channels. On the other hand, conventional LDPC codes design is usually based on random search within a huge exploration space for ...
Irregular low-density parity-check (LDPC) code design for parallel sub-channels with different qualities is investigated. Such channels appear in many communication systems, e.g., orthogonal frequency-division multiplexing systems. When channel knowledge is available at both the transmitter and receiver...
We introduce a model of a combination of particular low density parity check(LDPC) code and quadraturequadrature phase shift keying(Q2 PSK) constellation for the application of the downlink of the unmanned aerial vehicle(UAV) data chain. This model is a modification of the combination of LDPC co...
We design sub-matrices for column-weight two and column-weight three codes. This design makes use of a simple shifting function given by the proposed scheme. These are then combined into a final H-matrix using Gray code representations. The proposed method provides structured, regular codes with...
Our approach is to design the LDPC code in a way that takes into account the constraints imposed by the existing architecture, without compromising the communication performance. In this paper, a procedure for architecture-aware LDPC code design which minimize the number of global memory accesses ...
对抗性无线通信;低密度奇偶校验码;连续相位调制;串行级联 TN911.22A 0258-79982011 12-0110-04 Design and analysis of a serially concatenated CPM system based on LDPC code Li HuanyuBai PengPeng WeidongWang XuhuaHe Gang *基金项月:装备预先研究项目基金51310020401;陕西省重点实验室基金 201102Y02 QC-LDPC...
ldpcbitfillingextendedgirthcode ExtendedBit-FillingandLDPCCodeDesign JorgeCampelloandDharmendraS.Modha Abstract—Recently,we[1]proposedasimple-to-implementheuristic, namely,BIT-FILLING,forconstructinghighrateandhighgirthLDPC codes.Inthepresentwork,weextendBIT-FILLING,anddemonstratethat theextendedalgorithmproducesbe...
Each code bit is a variable node, while each parity-check equation represents a check node. An edge is placed between variable node i and check node j if there is a “1” in the i-th column and j-th row of the parity-check matrix. An LDPC code ensemble is specified by a degree ...
Design of LDPC Codes for the Unequal Power Two-User Gaussian Multiple Access Channel In this letter, we describe an LDPC code design framework for the unequal power two-user Gaussian multiple access channel using EXIT charts. We show that t... A Balatsoukas-Stimming,AP Liavas - 《Wireless ...
In this paper, we design a shared memory interleaver to implement turbo code and LDPC code channel interleaving. The functions of the interleaver between the two codes are concentrated in a single architecture for shared implementation, which saves silicon costs. The switching of different standards ...