Robust Joint Source-Channel Coding for Delay-Limited Applications

In this paper, we consider the problem of robust joint source-channel coding over an additive white Gaussian noise channel. We propose a new scheme which achieves the optimal slope for the signal-to-distortion (SDR) curve (unlike the previous known coding schemes). We also drive some theoretical bounds on the asymptotic performance of delay-limited hybrid digitalanalog (HDA) coding schemes. We show that, unlike the delayunlimited case, for any family of HDA codes, the asymptotic performance loss is unbounded (in terms of dB).

• Type: Journal
• Year: 2008
• Where: CORR
• Authors: Mahmoud Taherzadeh, Amir K. Khandani
• Keywords: Additive White Gaussian Noise, Asymptotic Performance, Coding Schemes, CORR 2008, Education