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In this paper, we present an efficient cooperative transmission scheme for high speed 60 GHz WPAN system. We consider a transmission system which consists of a source, a destination, and a relay. Data transmission from a source to a destination consists of first and second tine frames. In the first frame a source broadcasts encoded information bits by using a convolutional code (CC). In the second...
This paper deals with robust model predictive control (MPC) of an input and state constrained linear system, when the system and controller are separated by a digital communication channel of limited capacity. By extending some existing results within the robust MPC literature, the MPC scheme proposed in this paper employs time-variant ??safety margins?? within the finite horizon optimization problem,...
In this paper, we deal with decoding of convolutional codes using artificial intelligence techniques. A comparison of our decoder versus the Viterbi decoder in terms of performance and computing complexity is given. The simulation results show that the genetic algorithms based decoder (GAD) outperforms the Viterbi decoders. Furthermore the computing complexity of GAD is better for codes with large...
We investigate the problem of constructing fountain codes for distributed storage in sensor networks. Specifically, we assume that there are n storage nodes with limited memory and k < n data nodes generating the data by sensing the environment. We want a data collector who can appear anywhere in the network, to query any k + epsi storage nodes and be able to retrieve almost all the data packets...
Turbo codes have been chosen in the third generation cellular standard for high-throughput data communication. These codes achieve remarkably low bit error rates at the expense of high-computational complexity. Thus for hand held communication devices, designing energy efficient Turbo decoders is of great importance. In this paper, we present a suite of MAP-based Turbo decoding algorithms with energy-quality...
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