Decoding Techniques for a Multi-Tone Multi-Band DHA FH OFDMA with MaxMin Detector

Abstract

Coded DHA FH OFDMA systems with noncoherent order statics-based reception are promising candidates for future generation machine type communications due to their immunity to drastic multi-user interference, imperfect channel estimation and power control. MaxMin detector is an order statistics-based detector recently proposed for such systems. It has been demonstrated that the MaxMin detector can provide better performance for the same effective rate than any other order statistic-based detector proposed while having lower complexity. In what follows a modified decoding algorithm for a multi-tone coded modulation using MaxMin detector is considered. It is shown that the modified decoding procedure proposed hereinafter provides substantial performance gain at the expense of moderate complexity increase.