Simultaneous Adaptive Estimation of Carrier Phase, Symbol Timing, and Data for a 49-QPRS DFE Radio Receiver

McMillen, G. R.; Shafi, Mansoor; Taylor, D.P.

doi:10.1109/tcom.1984.1096085

Cited by 12 publications

(3 citation statements)

References 6 publications

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“…Ud a~ij -00 l: WO(-7)1J~(7)d7 + 2 n~s l: Wo(7)Ho(7 -nT)d7 l:H~(7 -nT)1J~(7)d7] = 0, (i, j) = 1, ... , 4, (21) where the matrices, 1JZ, t.i = 1, ... ,4 have the entry "l" in the (lij)th position and zero everywhere else. By computing the trace of eq.…”

Section: The Optimization Problemmentioning

confidence: 99%

Cross-Polarization Cancellation and Equalization in Digital Transmission Over Dually Polarized Multipath Fading Channels

Kavehrad

Salz

1985

At&T Technical Journal

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A theory for data‐aided equalization and cancellation in digital data transmission over dually polarized fading radio channels is presented. The present theory generalizes and extends previous work by admitting decision feedback structures with finite‐tap transversal filter implementations. Subject to the assumption that some past and/or future data symbols are correctly detected, formulas and algorithms for evaluating the least mean‐square error for different structures are presented. In a sequence of curves we evaluate and compare the performance of various structures for a particular propagation model and several fading events. We find improvement in performance for decision feedback over linear equalization. More importantly, we discovered that in this application, as in the single‐channel transmission case, decision feedback/canceler structures are much less sensitive to timing phase than linear equalizers.

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Section: The Optimization Problemmentioning

confidence: 99%

Cross-Polarization Cancellation and Equalization in Digital Transmission Over Dually Polarized Multipath Fading Channels

Kavehrad

Salz

1985

At&T Technical Journal

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“…In addition, the delay and Doppler estimates were quantized in [4], and thus this technique seems better suited for initial coarse acquisition rather than delay tracking. The problem of joint delay and phase estimation was also considered in [5] and [6], but the impact of multipath on synchronization was addressed only in the latter reference. Specifically, an adaptive equalizer was used to suppress the multipath components prior to delay estimation in [6], but no attempt was made to jointly estimate the multipath and delay parameters.…”

Section: Introduciionmentioning

confidence: 99%

Joint estimation of PN code delay and multipath using the extended Kalman filter

Iltis

1990

IEEE Trans. Commun.

206

100

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Abstracr-The problem of delay estimation in the presence of multipath is considered. It is shown that the extended Kalman filter (EKF) can be used to obtain joint estimates of time-of-arrival and multipath coefficients for deterministic signals when the channel can be modeled by a tapped-delay line. Simulation results are presented for the EKF joint estimator used for synchronization in a direct-sequence (DS) spreadspectrum system operating over a freqnency-selective fading channel. A simplised model of the EKF joint estimator is considered for analysis purposes. The evolution in time of the tracking error probability density function and the nonlinear tracking error variance is examined through numerical solution of the Chapman-Kolmogorov equation. Finally, the nonlinear tracking error variance is compared to both the linearized error variance estimate directly provided by the EKF and the Cramer-Rao lower bound.

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“…In traditional communication systems, the estimations of syrribol timing, carrier phase, and data sequence are separated [4]. Because the estimations of symbol timing and carrier phase are separated from the data detection and the optimizing criterion for timing and phase are not minimizing the symbol error rate, the performance may not be optimum for the desired minimum-symbol-error-rate criterion.…”

Section: Introductionmentioning

confidence: 99%

Fully digital joint phase recovery, timing synchronization and data sequence demodulation

Cheng

Chen²

Proceedings of MILCOM '96 IEEE Military Communications Conference

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Simultaneous Adaptive Estimation of Carrier Phase, Symbol Timing, and Data for a 49-QPRS DFE Radio Receiver

Cited by 12 publications

References 6 publications

Cross-Polarization Cancellation and Equalization in Digital Transmission Over Dually Polarized Multipath Fading Channels

Cross-Polarization Cancellation and Equalization in Digital Transmission Over Dually Polarized Multipath Fading Channels

Joint estimation of PN code delay and multipath using the extended Kalman filter

Fully digital joint phase recovery, timing synchronization and data sequence demodulation

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