BER Performance of LDPC Code with TH-PPM over UWB Channel

In this paper,the impact of Low density parity check code(LDPC) on performance of system under TH-PPM model over UWB channel is investigated. Single band UWB that is time hopping technique is used to randomizing the multi access capability without interference. The bit error rate of proposed system is simulated for different gain level by varying number of users.Low bit error rate is achieved even number of users gets increased. The low density parity check code is one of the superior error correcting code and are known to achieve the Shannon limit.LDPC Codes adds redundancy to the uncoded input data to make it more immune to channel impairements.The TH-PPM modulation which adapts its number of time hops depending on the required bit error rate and eliminates near far effect in multiple access communication.The proposed system is used to achieve fast,error free and secure communication in medical field.