| Optimized Algebra LDPC Codes for Bandwidth Efficient Modulation |
|
Gi-Yean Hwang1, Yi Yu2, Moon-Ho Lee1 |
1Dept. of Information and Communication, Chonbuk National University
2Dept. of Information and Communication, Chonbuk National Universit |
|
|
|
|
| Abstract |
|
In this paper, we implement an efficient MLC/PDL system for AWGN channels. In terms of the tradeoff between the hardware implementation and system performance, proposed algebra LDPC codes are optimized by the Gaussian approximation(GA) according to the rate of each level assigned by the capacity rule and chosen as the component code. System performance with Ungerboeck Partitioning(UP), Miked Partitioning(MP) and Gray Mapping(GM) of 8PSK are evaluated, respectively. Many results are presented in this paper; they can indicate that the proposed MLC/PDL system using optimized algebra LDPC codes with different code rate, capacity rule and Gray mapping(GM) can achieve the best performance. |
| Key words:
LDPC Code, Multilevel Coding, Parallel Decoding on Levels, Gaussian, Ungerboeck. |
|
PDF Links
Full text via DOI
Download Citation
