Understanding digital subscriber line technology
Understanding digital subscriber line technology
Principles of Mobile Communication
Principles of Mobile Communication
Practical Genetic Algorithms with CD-ROM
Practical Genetic Algorithms with CD-ROM
Time-domain and frequency-domain per-tone equalization for OFDM over doubly selective channels
Signal Processing - Signal processing in communications
Bitrate maximizing per group equalization for DMT-based systems
Signal Processing - Fractional calculus applications in signals and systems
IEEE Transactions on Signal Processing
Fast-Converging Blind Adaptive Channel-Shortening and Frequency-Domain Equalization
IEEE Transactions on Signal Processing
Equalization for discrete multitone transceivers to maximize bitrate
IEEE Transactions on Signal Processing
Bit Error Rate Minimizing Channel Shortening Equalizers for Cyclic Prefixed Systems
IEEE Transactions on Signal Processing
Digital radio takes to the road
IEEE Spectrum
New high-rate wireless LAN standards
IEEE Communications Magazine
Broadband is power: internet access through the power line network
IEEE Communications Magazine
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In cyclic prefixed wireless communication systems, the bit error rate (BER) is the primary design concern. However, most equalizers for these systems optimize proxy metrics that are easy to use but are suboptimal in terms of BER. In this work, a channel shortener and frequency domain equalizer (FEQ) are developed for cyclic prefixed systems, which directly attempt to minimize the BER. To do this, first we modify the FEQ structure of a single input multiple output (SIMO) system such that the diversity combining is after the FEQ (whereas usually it is before the FEQ); and extend adaptive equalization algorithms to the new structure. This greatly mitigates frequency nulls, improving the BER. Second, a Genetic Algorithm, which is an optimization method based on the principles of natural selection and genetics, is used to choose the channel shortener to directly minimize the BER. The new approaches lower the BER by 10^2 in simulations.