Name
Title | ||
|---|---|---|
Design Of Efficient Ldpc Coded Non-Recursive C E-Based Gmsk System For Space Communications |
Abstract | ||
|---|---|---|
We consider a low-density parity-check (LDPC) coded non-recursive Gaussian minimum shift keying (GMSK) scheme for space communications subject to low signal-to-noise ratio (SNR), limited power, and spectrum resources. First, we design a non-recursive continuous-phase encoder (NRCPE)-based GMSK modulator to alleviate the impact of the error propagation existed in a recursive CPE (RCPE)-based one. Then, a corresponding pilot-aided quasi-coherent demodulation algorithm (PA-QCDA) is developed for improving the performance of the non-coherent demodulation and the impact of the Doppler shift in the coherent demodulation, whose basic principle is that a modified Bahl, Cocke, Jelinek, and Raviv (BCJR) algorithm-based detection performs on the received signals with initial and ending trellis-states being determined using the very small pilot overhead. Finally, we choose proper modulation parameters for the NRCPE-based GMSK signaling according to the tradeoffs between power and spectral efficiency. The simulation results show that the proposed system using the PA-QCDA can achieve excellent performance and can also work well in the presence of the large Doppler shifts and some burst errors. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/ACCESS.2019.2919686 | IEEE ACCESS |
Keywords | DocType | Volume |
LDPC, GMSK, BCJR, pilot-aided, space communications | Journal | 7 |
ISSN | Citations | PageRank |
2169-3536 | 0 | 0.34 |
References | Authors | |
0 | 5 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Hai Zhu | 1 | 87 | 22.69 |
| Hengzhou Xu | 2 | 12 | 12.24 |
| Bo Zhang | 3 | 95 | 47.19 |
| Mengmeng Xu | 4 | 0 | 2.37 |
| Sifeng Zhu | 5 | 2 | 1.75 |