Per-survivor processing and tentative decisions: what is in between?

Raheli, R.; Marino, Gennaro G.; Castoldi, P.

doi:10.1109/26.486599

Cited by 28 publications

(6 citation statements)

References 10 publications

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“…A full complexity PSP approach [11,12] (i.e., considering all trellis paths) is not appropriate here because of the huge number of states and paths in the trellis considered in this paper. One might think of using reduced complexity PSP [17] or tentative decision (TD) algorithms. However, since these algorithms consider a limited number of paths, the selection of these paths (according to their probability) at each symbol period makes these algorithms intractable in our application.…”

Section: Phase Tracking Methodsmentioning

confidence: 99%

Joint phase-recovery and demodulation-decoding of AIS signals received by satellite

Prevost¹,

Coulon

Bonacci

et al. 2013

2013 IEEE International Conference on Acoustics, Speech and Signal Processing

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Section: Phase Tracking Methodsmentioning

confidence: 99%

Joint phase-recovery and demodulation-decoding of AIS signals received by satellite

Prevost¹,

Coulon

Bonacci

et al. 2013

2013 IEEE International Conference on Acoustics, Speech and Signal Processing

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“…LMS channel tracking was proposed early on for adaptive receivers 82, 83, and it continues to be a popular form of tracking 53, 84–101. Different step sizes can be used for different taps depending on the average tap power 61, 102, 103.…”

Section: Channel Trackingmentioning

confidence: 99%

“…To reduce complexity, the number of channel models can be less than the number of states. In Reference 89, channel models are kept for the best K states. In Reference 97, the states are partitioned and a channel estimate is maintained for each partition.…”

Section: Data‐directed Trackingmentioning

confidence: 99%

Channel estimation in narrowband wireless communication systems

Arslan¹,

Bottomley²

2001

Wireless Communications

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Channel estimation is an integral part of standard adaptive receiver designs used in narrowband, digital wireless communication systems. In this tutorial paper, commonly used approaches to channel estimation are reviewed. Both time‐invariant and time‐varying channels are considered. For time‐varying channels, both pilot symbol interpolation and data‐directed channel tracking are considered. Applications include the Global System for Mobile communications, the Enhanced Data rates for Global Evolution system, and another Time‐Division Multiple‐Access system known as Telecommunications Industry Association/Electronics Industry Association/Interim Standard—136 (TIA/EIA/IS‐136 or IS‐136). Copyright © 2001 John Wiley & Sons, Ltd.

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“…The PSP algorithm was first proposed by Seshadri [92]; as well as by Raheli et al [93], [94] for blind equalization in single-user ISI-contaminated channels. Xie et al extended their own earlier work [91] to include the estimation of user delays along with channel and data estimation [95].…”

Section: H Blind Detectionmentioning

confidence: 99%

Burst-by-burst adaptive multiuser detection cdma: a framework for existing and future wireless standards

Kuan

Hanzo

2003

Proc. IEEE

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This paper provides a broad overview of the multiuser detection literature of the past few years in a nonmathematical, easily accessible approach. The treatment is then extended to the comparative study of channel-quality controlled burst-by-burst (BbB) adaptive code division multiple access (CDMA) detection such as parallel interference cancellation, successive interference cancellation, and joint detection (JD I. MOTIVATIONMobile propagation channels exhibit time-variant propagation properties [1]. Although, apart from simple cordless telephoneschemes,mostmobileradiosystemsemploypowercontrol for mitigating the effects of received power fluctuations, rapid channel quality fluctuations cannot be compensated by practical, finite reaction-time power control schemes. Furthermore, the ubiquitous phenomenon of signal dispersion due to the multiplicity of scatering and reflecting objects cannot be mitigated by power control. Similarly, other performance lim- iting factors, such as adjacent-channel and cochannel intereference as well as multiuser interference (MUI) vary as a function of time. The ultimate channel quality metric is the bit-error rate (BER), regardless of the specific channel impairments encountered. The channel quality variations are typically higher near the fringes of the propagation cell or when moving from an indoor scenario to an outdoor cell due to the high standard deviation of the shadow fading and fast fading [1] encountered, even in conjunction with agile power control. Furthermore, the bit errors typically occur in bursts due to the time-variant channel quality fluctuations; hence, it is plausible that a fixed transceiver mode cannot achieve a high flexibility in such environments. The design of powerful and flexible transceivers [2]-[4] has to be based on finding the best compromise among a number of contradicting design factors [2]- [4]. Some of these factors are low power consumption, high robustness against transmission errors among various channel conditions, high spectral efficiency, low-delay for the sake of supporting interactive real-time multimedia services, high-capacity networking, and so forth [5]. In this paper, we will address a few of these issues in the context of direct sequence code division multiple access [6] (DS-CDMA) systems, 1 since CDMA is the solution standardized in all three recently ratified global mobile 1 The simple philosophy of DS-CDMA is that a binary bit of a user is signaled to the receiver with the aid of a unique, user-specific signature sequence. The DS spreading sequences may be chosen such that they are orthogonal to each other; hence, the individual users' signals do not interfere with each other, provided that the transmission channel does not destroy the orthogonality of the DS spreading sequences. When the orthogonality of the DS spreading codes is retained at the receiver, no MUI is inflicted; hence, a simple correlator is capable of detecting the codes of the users conveying the information with the aid of the code's polarity. By contrast, if the...

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Per-survivor processing and tentative decisions: what is in between?

Cited by 28 publications

References 10 publications

Joint phase-recovery and demodulation-decoding of AIS signals received by satellite

Joint phase-recovery and demodulation-decoding of AIS signals received by satellite

Channel estimation in narrowband wireless communication systems

Burst-by-burst adaptive multiuser detection cdma: a framework for existing and future wireless standards

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