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Many significant sources of error take place in the smart antenna system like mismatching between the supposed steering vectors and the real vectors, insufficient calibration of array antenna, etc. These errors correspond to adding spatially white noise to each element of the array antenna, therefore the performance of the smart antenna falls and the desired output signal is destroyed. This paper...
Smart antenna systems are of great importance in wireless communication and radar applications. They effectively enhance the system capacity and reduce the co-channel interference. Smart antenna is an array antenna that uses adaptive beamforming algorithms to steer the main beam toward the desired signal direction and reject the interfering signals of the same frequency from other directions without...
We propose a simple modification to the progressive edge-growth (PEG) algorithm in order to control the girth of low-density parity-check (LDPC) code Tanner graphs constructed. Using the modified algorithm, the edge densities in short irregular rate-% LDPC code graphs can be increased without increasing the correlation between edges in graphs by creating cycles of undesired length. Density evolution...
Accurate estimation of RF signal spatial local mean is of crucial importance in wireless communication systems planning, design and operation, specifically in coverage planning tools, channel access and power control, handoff algorithms, etc. However, so far, no universally applicable and verified approach for calculation of relevant averaging parameters has been developed. In this paper, comprehensive...
The use of chaos in signal processing and telecommunication in the last few years originates several results, especially in spread spectrum system, cryptography and watermarking. The aim of this paper is to exploit the features of chaos in a MIMO radar system using phase shift keying waveform and complex codes as multiple access. In previous works it has been proven that a chaotic map could generate...
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