Swarm intelligence
EURASIP Journal on Wireless Communications and Networking - Intelligent Systems for Future Generation Wireless Networks
Optimization of power allocation for interference cancellation with particle swarm optimization
IEEE Transactions on Evolutionary Computation - Special issue on computational finance and economics
Optimal multiuser MIMO linear precoding with LMMSE receiver
EURASIP Journal on Wireless Communications and Networking - 3GPP LTE and LTE Advanced
Impacts of Narrowband Interference on OFDM-UWB Receivers: Analysis and Mitigation
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
Analysis of Narrowband Communication Systems Impaired by MB-OFDM UWB Interference
IEEE Transactions on Wireless Communications
Detect and avoid: an ultra-wideband/WiMAX coexistence mechanism [Topics in Radio Communications]
IEEE Communications Magazine
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Active interference cancellation (AIC) is an effective technique to provide interference avoidance feature for an ultrawideband (UWB) OFDM transmitter. Partial transmit sequence-AIC (PTS-AIC), which was recently proposed as an improvement of AIC, requires high computational complexity by doing the exhaustive search of all possible weighting factors whose number grows exponentially with the number of subblocks used. To reduce the complexity of PTS-AIC, this paper proposes a suboptimal way, called particle swarm optimization (PSO), to choose the weighting factors suboptimally without much performance degradation. Both continuous and discrete versions of PSO have been evaluated, and it has been shown that the discrete PSO is able to reduce the complexity significantly without sacrificing the performance of PTS-AIC in many cases.