Research demonstrates the effectiveness of ldpc codes in space communications, indicating their potential application in power transformer monitoring.
The Consultative Committee for Space Data Systems (CCSDS) currently proposes bilateral LowDensity Parity-Check (LDPC) signals and Bose-Chaudhuri-Hocquenghem (BCH) codes for correction of errors in orbit Telecommand (TC). Other possibilities, like Non-Binary LDPC (NB-LDPC) codes, were subsequently abandoned because of their high decoding difficulty. NBLDPC coding are excellent choices for interplanetary communications since they outperform their decimal equivalents over jamming and Additive White Gaussian Noise (AWGN) channels. By suggesting a very effective decoding building design, this research work demonstrate the viability of NB-LDPC coding for space TC purposes. The architecture is tailored for a space-certified Virtex-5QV FPGA, and the suggested decoding has been implemented using a (128, 64) NB-LDPC code through GF (16). At an encoded increase of 0.7 dB and a manageable installation cost, the results indicate that NB-LDPC coding is a superior substitute for the conventional binary LDPC. The suggested architecture uses just 9615 LUTs and 5637 FFs to provide a speed of 2.03 Mbps, despite the CCSDS's specified highest rate for TC being 2 Mbps (no specialized memory is employed). Furthermore, regardless of the H matrix, this architecture can be used with any standard (2, 4) NBLDPC (128, 64) code over GF (16), providing versatility in code selection. According to this work, NB-LDPC codes are a great choice for forthcoming TC uplink specification iterations.
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