Multilevel Coding Technology Based on Kite Code in AWGN Channel

Multilevel coding (MLC) scheme, combining coding and modulation technology, does not take up additional bandwidth resources and does not reduce the effective data transmission rate as well, but it can truly improve the reliability of data transmission. According to the multilevel coding feature of the MLC technology and the channel coding theory, it is evident theoretically that the combination of the rate-less code and the MLC technology would get better performance of bit error rate and throughput. As a new type of rate-less code, Kite code has the advantages of both fountain code and LDPC code. In this paper, a new MLC method was designed based on the calculation of the channel capacity of each equivalent channel, taking Kite code as the component code, combining BP set segmentation and high order modulation mode. Simulation results show that the decoding performance of the MLC technology with Kite code as component code is far better than that of the MLC technology with traditional fountain code as component code.