The optimizing of LDPC coded frequency-hopping communication over blocking interference

In order to further improve the anti-interference ability of frequency-hopping communication system over blocking interference. Under the well channel estimation, the frequency-hopping communication system has been improved by the optimizing degree sequences of LDPC codes over mixed channel. It has been proved by simulation that the performance of the codes in which 2048 code length and 0.5 code rate improves 0.62dB under the optimizing degree sequences of erasure probabilities than that over the Gaussian channel by the error rate of 10-5. It also provides a less complicated compromise proposal aiming at its use in actual fight. It's proposed that the frequency-hopping communication under blocking interference, the LDPC code with 0.5 code rate can be optimized under 40% deletion mixed channel, and simulates that the idea can be applied to the actual combat.