An adaptive maximum likelihood receiver for correlated Rayleigh-fading channels

Dam, W.C.; Taylor, D.P.

doi:10.1109/26.317409

Cited by 52 publications

(48 citation statements)

References 11 publications

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“…The approach described here, while not strictly optimum, leads to excellent performance. Moreover, as in [1] and [21], for the values of BT of interest, it is straightforward to select sufficiently large values of Q and L.…”

Section: Simulation Modelmentioning

confidence: 99%

Maximum likelihood sequence estimation of differentially encoded PSK signals transmitted over Rayleigh frequency-flat fading channels

Vitetta

Taylor

1995

Int J Wireless Inf Networks

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The problem of maximum likelihood (ML) detection of differentially encoded M-PSK signals on Rayleigh fading channels is investigated. It is shown that the solution to this problem can be easily related to previous results [t] and leads to the implementation of a receiver structure based on the Viterbi algorithm and employing per-survivor processing. The error rate performance of this receiver is evaluated by means of computer simulations for both coded and uncoded systems.

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Section: Simulation Modelmentioning

confidence: 99%

Maximum likelihood sequence estimation of differentially encoded PSK signals transmitted over Rayleigh frequency-flat fading channels

Vitetta

Taylor

1995

Int J Wireless Inf Networks

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“…Since it can also be shown that and , (8) implies that the ML detection of given can be accomplished via (9) Under the assumption of correct past decisions, i.e.,…”

Section: Dfddmentioning

confidence: 99%

“…Two possible approaches can be taken to counter this problem: 1) the fading correlation and the SNR can be estimated [9]- [11] and then the estimates can be used to compute the coefficients, and b) adaptive algorithms can be employed to directly compute the coefficients [9], [12].…”

mentioning

confidence: 99%

On the Robustness of Decision-Feedback Detection of DPSK and Differential Unitary Space-Time Modulation in Rayleigh-Fading Channels

Bhukania

Schniter²

2004

IEEE Trans. Wireless Commun.

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Abstract-Decision-feedback differential detection (DFDD) of differential phase-shift keying (DPSK) and differential unitary space-time modulation (DUST) in Rayleigh-fading channels exhibits significant performance improvement over standard single-symbol maximum-likelihood detection. However, knowledge of channel fading correlation and signal-to-noise ratio (SNR) is required at the receiver to compute the feedback coefficients used in DFDD. In this letter, we investigate the robustness of the DFDD to imperfect knowledge of the feedback coefficients by modeling the mismatch between estimated feedback coefficients and ideal coefficients in terms of mismatch between the estimated values of fading correlation and SNR and the true values. Under the assumption of a block-fading channel when nondiagonal DUST constellations are used and a continuous fading channel otherwise, we derive exact and Chernoff bound expressions for pair-wise word-error probability and then use them to approximate the bit-error rate (BER), finding close agreement with simulation results. The relationships between BER performance and various system parameters, e.g., DFDD length and Doppler mismatch, are also explored. Furthermore, the existence of an error floor in the BER-vs-SNR curve is investigated for the infinite-length DFDD. For the special case of Jakes' fading model, it is shown that the error floor can be removed completely even when the Doppler spread is over-estimated.

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“…An extension to differential quadrature amplitude modulation (QAM) is described in a voiceband modem standard (Koukourlis, 1997). The estimator-correlator principle was used in a DPSK system in (Dam & Taylor, 1994). EDs are sometimes called radiometers.…”

Section: Historical Development Of Phase-unaware Detection Methodsmentioning

confidence: 99%

Low Complexity Phase-Unaware Detectors Based on Estimator-Correlator Concept

Anttonen¹,

Mämmelä²,

Pasupathy³

2011

Ultra Wideband Communications: Novel Trends - System, Architecture and Implementation

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An adaptive maximum likelihood receiver for correlated Rayleigh-fading channels

Cited by 52 publications

References 11 publications

Maximum likelihood sequence estimation of differentially encoded PSK signals transmitted over Rayleigh frequency-flat fading channels

Maximum likelihood sequence estimation of differentially encoded PSK signals transmitted over Rayleigh frequency-flat fading channels

On the Robustness of Decision-Feedback Detection of DPSK and Differential Unitary Space-Time Modulation in Rayleigh-Fading Channels

Low Complexity Phase-Unaware Detectors Based on Estimator-Correlator Concept

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