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This paper discusses a near-optimal detection algorithm for 2times2 multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems operating on ultrawideband (UWB) channels. The reported affine restoration (AR) algorithm exploits the independence among the elements of the channel matrix and performs a parallel detection process at all receive antennas. For performance...
A new orthogonal coded multi-input- multi-output (MIMO) system using Walsh codes is presented in this paper. The proposed spatial multiplexing system offers equivalent bit error rate (BER) performance as compared to the conventional uncoded MIMO system while increasing data transmission rate by two folds. The optimum maximum likelihood (ML) detector is used in the proposed system. As ML detector offers...
Multi-input multi-output (MIMO) based communication system architecture promises increased capacity and high data rates. Increase in the number of transmit antennas and using higher order complex modulation schemes achieves even higher performance but with exponentially increasing complexity at the receiver end. This paper explores the application of genetic algorithm (GA) for reducing complexity...
Mining frequent itemset in transactional datasets is considered to be a very challenging research oriented task in data mining due to its large applicability in real world problems. Due to the NP-complete nature of problem, the efficiency of frequent itemset mining highly depends on the efficiency of algorithm implementation. In this paper we propose a number of different implementation techniques...
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