Parallel Detection Algorithm for Fast Frequency Hopping OFDM
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Xu Kun
und
Yi Xiao-xin
Abstract
Fast frequency hopping OFDM (FFH-OFDM) exploits frequency diversity in one OFDM symbol to enhance conventional OFDM performance without using channel coding. Zero-forcing (ZF) and minimum mean square error (MMSE) equalization were first used to detect FFH-OFDM signal with a relatively poor bit error rate (BER) performance compared to QR-based detection algorithm. This paper proposes a parallel detection algorithm (PDA) to further improve the BER performance with parallel interference cancelation (PIC) based on MMSE criterion. Our proposed PDA not only improves the BER performance at high signal to noise ratio (SNR) regime but also possesses lower decoding delay property with respect to QR-based detection algorithm while maintaining comparable computation complexity. Simulation results indicate that at BER = 10–3 the PDA achieves 5 dB SNR gain over QR-based detection algorithm and more as SNR increases.
Copyright © 2011 De Gruyter
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Artikel in diesem Heft
- Particle-in-Cell Analysis of 1 MW/110GHz Gyrotron Interaction Cavity
- Generation of Partial Response Signals by Means of Delay Line Filters in 50-Ω Technique
- Hardware Implementation of a MIMO Decoder Using Matrix Factorization Based Channel Estimation
- Parallel Detection Algorithm for Fast Frequency Hopping OFDM
- Cyclostationarity-Based and Super-Imposed Pilot-Aided Maximum Doppler Spread Estimation for LOFDM Systems in Doubly-Dispersive Channels
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- Cluster-Based Dynamic Topology Management in Cognitive Radio Ad Hoc Networks
