A COVQ-Based image coder for channels with bit errors and erasures

QC 20100525
We illustrate how channel optimized vector quantization (COVQ) can be used for channels with both bit-errors and bit-erasures. First, a memoryless channel model is presented, and the performance of COVQ's trained for this channel is evaluated for an i.i.d. Gaussian source. Then, the new method is applied in implementing an error-robust sub-band image coder, and we present image results that illustrate the resulting performance. Our experiments show that the new approach is able to outperform a traditional scheme based on separate source and channel coding.

Skoglund, MikaelKTH,Kommunikationsteori,ACCESS Linnaeus Centre(Swepub:kth)u1dbnyps (författare)
KTHKommunikationsteori (creator_code:org_t)

Ingår i:IEEE Transactions on Communications: IEEE Communications Society56:2, s. 161-1650090-67781558-0857

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