Name
Title | ||
|---|---|---|
Robust image and video transmission over spectrally shaped channelsusing multicarrier modulation |
Abstract | ||
|---|---|---|
This paper presents a new parallel transmission framework for reliable multimedia data transmission over spec- trally shaped channels using multicarrier modulation. We pro- pose to transmit source data layers of different perceptual im- portance in parallel, each occupying a number of subchannels. New loading algorithms are developed to efficiently allocate the available resources, e.g., transmitted power and bit rate, to the subchannels according to the source layers they transmit. Instead of making the bit error rate of all the subchannels equal as in most existing loading algorithms, the proposed algorithm assigns different error performance to the subchannels to achieve un- equal error protection for different layers. The channel induced distortion in mean-square sense is minimized. We show that the proposed system can be applied nicely to both fixed length coding and variable-length coding. Asymptotic gains with respect to channel distortion are also derived. Numerical examples show that the proposed algorithm achieves significant performance improvement compared to the existing work, especially for spec- trally shaped channels commonly used in in ADSL systems. |
Year | DOI | Venue |
|---|---|---|
1999 | 10.1109/6046.748174 | IEEE Transactions on Multimedia |
Keywords | Field | DocType |
different perceptual importance,bit error rate,bit rate,spectrally shaped channel,different layer,proposed algorithm,unequal error protection,channel induced distortion,different error performance,proposed system,video transmission,multicarrier modulation,robust image | Parallel communication,Computer science,Robustness (computer science),Real-time computing,Modulation,Artificial intelligence,Throughput,Distortion,Bit error rate,Computer vision,Communication channel,Algorithm,Orthogonal frequency-division multiplexing | Journal |
Volume | Issue | ISSN |
1 | 1 | 1520-9210 |
Citations | PageRank | References |
31 | 1.91 | 24 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Haitao Zheng | 1 | 43 | 2.93 |
| K. J. Ray Liu | 2 | 10390 | 743.86 |