Abstract
This thesis will discuss the error-resilient multirate transmissions on the signal level and the packet level. It proposes a subspace-based approach for acquiring the timing of wavelet-based multirate transmission systems. This shows that our approach can correctly acquire the initial timing of a symbol from anywhere within a symbol-time interval at a cost of increasing jitter variance. Then, we propose a frame timing acquisition algorithm for fractal modulation. Our algorithm exclusively uses the data redundancy inherent in fractal modulation to locate the start time of all the sub-bands (start-of-frame). The acquisition functions are derived using the maximum-likelihood method and the start-of-frame that maximizes the function attained by a serial search algorithm. For packet level multirate transmissions, we propose an analytical Rate-Distortion optimized joint source and channel coding algorithm for error-resilient scalable encoded video for lossy transmission. Our method separates video coding and packetization into diRerent tiers which can be easily incorporated into any coding structure that generates a set of independent compressed bit-streams. To demonstrate the performance, we use the 2-state Markov model to describe the burst loss channel and Reed-Solomon codes as forward error correction codes. We also propose a new framework in which the encoder estimates the effects of post-processing concealment and includes those effects in the rate-distortion analysis. Based on our framework, we develop optimal forward error control assignment