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Incremental frequency, amplitude and phase tracker (IFAPT) for coherent demodulation over fast flat fading channels

作     者:Bar-David, I Elia, A 

作者机构:Technion Israel Inst Technol Dept Elect Engn IL-32000 Haifa Israel 

出 版 物:《IEEE COMMUNICATIONS LETTERS》 (IEEE Commun Lett)

年 卷 期:1999年第3卷第11期

页      面:314-316页

核心收录:

学科分类:0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 

主  题:channel parameter tracking iterative decoding joint decoding and estimation turbo codes 

摘      要:The Incremental Frequency Amplitude and Phase Tracker (IFAPT) is a recursive algorithm that estimates the parameters of piecewise-linear approximation to assumed continuous narrow-band signals. The parameters are amplitude, phase, and their respective slopes. The simple, recursive nature of IFAPT enables its direct interaction with recursive algorithms, such as the Viterbi and the BCJR in the APP SISO module, used for iteratively decoding concatenated codes. An augmented APP (A(2)P(2))-module, containing IFAPT and BCJR algorithms, is here applied to iterative decoding serial concatenated convolutional codes under Rayleigh fading conditions with diversity reception. The bit-error rate under Rayleigh fading with dual diversity reception at E-hT/N-o - 6 dB and f(d)T(s) = 10(-2) is 10(-4), where E-bT is the total mean energy per bit in both diversity branches, f(d) is the Doppler frequency, and T-s the symbol time.

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