Name
Title | ||
|---|---|---|
Unequal error protection by partial superposition transmission using low-density parity-check codes |
Abstract | ||
|---|---|---|
In this study, the authors consider designing low-density parity-check (LDPC) coded modulation systems to achieve unequal error protection (UEP). They propose a new UEP approach by partial superposition transmission (PST) called UEP-by-PST. In the UEP-by-PST system, the information sequence is distinguished as two parts, the more important data (MID) and the less important data (LID), both of which are coded with LDPC codes. The codeword that corresponds to the MID is superimposed on the codeword that corresponds to the LID. The system performance can be analysed by using discretised density evolution. Also proposed in this study is a criterion from a practical point of view to compare the efficiencies of different UEP approaches. Numerical results show that, over both additive white Gaussian noise channels and uncorrelated Rayleigh fading channels, (i) UEP-by-PST provides higher coding gain for the MID compared with the traditional equal error protection approach, but with negligible performance loss for the LID; and (ii) UEP-by-PST is more efficient with the proposed practical criterion than the UEP approach in the digital video broadcasting system. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1049/iet-com.2013.1168 | IET Communications |
Keywords | Field | DocType |
additive white gaussian noise channels,lid,modulation coding,partial superposition transmission,awgn channels,mid,channel coding,error correction codes,uep approach,low density parity check,information sequence,ldpc coded modulation systems,digital video broadcasting system,less important data,discretised density evolution,more important data,digital video broadcasting,unequal error protection,codeword,error statistics,parity check codes,uncorrelated rayleigh fading channels,rayleigh channels,uep-by-pst system | Coding gain,Superposition principle,Low-density parity-check code,Gaussian channels,Algorithm,Real-time computing,Theoretical computer science,Coded modulation,Code word,Digital Video Broadcasting,Uncorrelated rayleigh fading channels,Mathematics | Journal |
Volume | Issue | ISSN |
8 | 13 | 1751-8628 |
Citations | PageRank | References |
2 | 0.41 | 13 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Kechao Huang | 1 | 60 | 5.65 |
| Chulong Liang | 2 | 103 | 12.50 |
| Xiao Ma | 3 | 487 | 64.77 |
| Baoming Bai | 4 | 353 | 63.90 |