| Title | Performance of Spatially Coupled LDPC Codes over Underwater Acoustic Communication Channel |
| Publication Type | Conference Paper |
| Year of Publication | 2020 |
| Authors | Padala, S. K., D'Souza, J. |
| Conference Name | 2020 National Conference on Communications (NCC) |
| Keywords | acoustic coupling, bandwidth 10.0 kHz, Belief Propagation (BP), channel capacity, channel coding, Doppler shift, equalisers, error statistics, Human Behavior, LDPC, low equalization complexity, low-density parity-check codes, OFDM, OFDM modulation, parity check codes, protograph based SC-LDPC codes, pubcrawl, reliable communication, Resiliency, Scalability, shallow water acoustic environment, telecommunication network reliability, terrestrial communication, turbo codes, underwater acoustic channel, underwater acoustic communication, underwater acoustic communication channel, UWA channels, UWA communication, wireless channels |
| Abstract | Underwater acoustic (UWA) channel is complex because of its multipath environment, Doppler shift and rapidly changing characteristics. Many of the UWA communication- based applications demand high data rates and reliable communication. The orthogonal frequency division multiplexing (OFDM) system is very effective in UWA channels and provides high data rate with low equalization complexity. It is a challenging task to achieve reliability over these channels. The low-density parity-check (LDPC) codes give a better error performance than turbo codes, for UWA channels. The spatially-coupled low-density parity-check (SC-LDPC) codes have been shown to have the capacity-achieving performance over terrestrial communication. In this paper, we have studied by simulation, the performance of protograph based SC-LDPC codes over shallow water acoustic environment with a communication range of 1000 m and channel bandwidth of 10 KHz. Our results show that SC-LDPC codes give 1 dB performance improvement over LDPC codes at a Bit Error Rate (BER) of 10-3 for the same latency constraints. |
| DOI | 10.1109/NCC48643.2020.9056068 |
| Citation Key | padala_performance_2020 |
Performance of Spatially Coupled LDPC Codes over Underwater Acoustic Communication Channel