Low-Density Parity Check Codes

Low-Density Parity Check Codes

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Coded modulation is a bandwidth-efficient scheme that integrates channel coding and modulation into one single entity to improve performance with the same spectral efficiency compared to uncoded modulation. Low-density parity-check (LDPC) codes are the most powerful error correction codes (ECCs) and approach the Shannon limit, while having a relatively low decoding complexity. In communication system signal is transmitted and received at the output. But due to various external noise errors occur in the received data in comparison to the transmitted one. To eliminate the errors various error co...