Analysis of error correcting capability of LDPC code over fading and non-fading channel under various parameters

The growing demand for voice and multimedia services on wireless communication spur the advancement of efficient error detection and correction coding techniques. The error correcting capability of any encoding technique depends on the number of parity bits added and position, where the parity bits are placed. Low density parity check code having sparse parity check matrix provides the ability to reach near the Shannon limit over the fading and non-fading channel. In this paper, the impact of LDPC Code on the performance of communication system over various channel are analyzed by considering different modulation scheme, Eb/No value, size of signal constellation and code rate. The value of code rate less than or equal to 2/3, LDPC Code acquires the negligible bit error rate regarding the minimum value of Eb/No (8.5 dB) and maximum value of size of signal constellation (16) with PSK modulation scheme. The obtained results are useful to improve the performance and proper utilization of power and bandwidth in wireless communication application.