Product channel codes are proposed to protect progressively compressed and packetized images for noisy channels. Within packets, the product code uses the concatenation of a ratecompatible punctured convolutional code and an error detecting parity check code. Across packets, Reed–Solomon codes are used. Benefits include flexible choice of delay, adaptability of error protection level (i.e., une...

This paper describes the design and implementation of a memoryless digital predistortion (DPD) system for the linearization of power amplifiers. The system prototype predistorter requirements and architecture are implemented over a DSP-FPGA development kit. The design methodology is described in practical blocks and analyzed in detail with special emphasis in the digital domain, where the algor...

This paper considers the problems of stability, stabilization and H∞ control via memoryless state feedback for uncertain discrete-time Markovian jump linear systems with mode-dependent time delays. Based on linear matrix inequalities, delay-dependent solutions are obtained by using a descriptor model transformation of the system and by applying a new bounding technique for cross terms. Numerica...

Sufficient conditions for passivity (positive realness) are obtained for continuous-time, linear, retarded, and neutral-type systems. A delay-dependent solution is given in terms of linear matrix inequalities (LMIs) by using a descriptor model transformation of the system and by applying Park’s inequality for bounding cross terms. A memoryless state-feedback solution is derived. Numerical examp...

A public multiple-access digital watermarking system is studied, in which two correlated Gaussian covertexts are watermarked independently and then sent to one authorized receiver via memoryless Gaussian attack channels. Given two distortion level pairs (D1,D2) and (D′ 1,D ′ 2) with respect to the average squared error distortion measure, an achievable region is given in single-letter informati...

This paper concerns a problem of robust stabilization of a class of discrete-time systems with norm-bounded parameter uncertainty and unknown constant delay. A new delay-dependent stabilization condition using a memoryless controller is formulated in terms of matrix inequalities. An algorithm involving convex optimization is proposed to design a controller guaranteeing a suboptimal maximal dela...

Density evolution is one of the most powerful analytical tools for low-density parity-check (LDPC) codes and graph codes with message passing decoding algorithms. With channel symmetry as one of its fundamental assumptions, density evolution has been widely and successfully applied to different channels, including binary erasure channels, binary symmetric channels, binary additive white Gaussia...

The multilinear system framework allows for the exploitation of identification problem from different perspectives in context various applications, such as nonlinear acoustic echo cancellation, multi-party audio conferencing, and video which could be modeled through parallel or cascaded filters. In this paper, we introduce memoryless memory structures that are described a bilinear perspective. ...

We investigate the joint source-channel coding (JSCC) excess distortion exponent EJ (the exponent of the probability of exceeding a prescribed distortion level) for memoryless communication systems with continuous alphabets. We first establish upper and lower bounds for EJ for systems consisting of a memoryless Gaussian source under the squared-error distortion fidelity criterion and a memoryle...