Recent progress in Multiuser Detection

Verdú, S.

doi:10.1007/bfb0042716

Cited by 82 publications

(22 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the case of synchronous direct sequence spread-spectrum, Chen and Roy [21] report a recursive least squares (RLS) computation of the decorrelating detector coefficients which requires knowledge of all signature sequences but sidesteps the need to perform computations with crosscorrelations. In the asynchronous case, the processing window can be truncated to the bit of interest as suggested in [22], [23]; or it can span a truncated sliding window as proposed in [24]. In the latter case, the dynamic updating of the decorrelating detector coefficients in response to variations in the crosscorrelations has been investigated in [25].…”

Section: Decorrelating Detectormentioning

confidence: 99%

Adaptive Multiuser Detection

Verdú¹

1995

Code Division Multiple Access Communications

Self Cite

1,050

1,892

View full text Add to dashboard Cite

Section: Decorrelating Detectormentioning

confidence: 99%

Adaptive Multiuser Detection

Verdú¹

1995

Code Division Multiple Access Communications

Self Cite

1,050

1,892

View full text Add to dashboard Cite

“…The formulation about to be presented is akin to that described in [19], which discusses the formulation of a one-shot asynchronous decorrelator. We let…”

Section: Asynchronous Communicationmentioning

confidence: 99%

“…The next possible extension is to consider an n-shot receiver which uses the same technique described here, but for n symbols of the received signal; i.e. create (n + 1 ) (K -1) + n virtual users [19]. Another possibility is to use the same techniques proposed in this section but in conjunction with the asynchronous infinite impulse response (IIR) decorrelator [8] which operates on the entire received signal sequence.…”

Section: B* = I -S*(r)r*(r)-is*t(t_)mentioning

confidence: 99%

Adaptive decorrelating detectors for CDMA systems

Mitra

Poor

1996

Wireless Pers Commun

View full text Add to dashboard Cite

Abstract. Multi-user detection allows for the efficient use of bandwidth in Code-Division Multiple-Access (CDMA) channels through mitigation of near-far effects and multiple-access noise limitations. Due to its inherent noise and multipath immunity, CDMA multi-access is being considered as a platform for personal communication systems (PCS). As CDMA based digital communication networks proliferate, the need to determine the presence of a new user and integrate knowledge of this new user into the detection scheme becomes more important. The decorrelafing detector is a linear multi-user detector that is asymptotically optimal in terms of near far resistance; however, in the presence of a new unknown user, performance of the decorrelator is severely degraded. Adaptive decorrelators are constructed which adaptively augment an existing conventional decorrelator to demodulate a new active user in addition to existing users. Several likelihood ratio based schemes are employed. Both synchronous and asynchronous communication are investigated.

show abstract

“…The channel response is most likely traced with a training signal. Some previous works have been studied on detection method for MIMO channels in various other applications [9], [10]. In this paper, we focus on the vector least mean-squared (LMS) algorithm for adaptation with training applied to MIMO SDSL channel model.…”

Section: Proposed Channel Modelmentioning

confidence: 99%

Mitigation of crosstalk on the SDSL upstream transmission with vector equalization

Chu

Brooke²

ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240)

View full text Add to dashboard Cite

-This paper provides a new approach to mitigate the crosstalk interference in the symmetric digital subscriber line (SDSL) upstream transmission. A vector channel equalizer has been proposed for the SDSL upstream receiver to enhance spectral compatibility for the SDSL services. This approach outperforms a conventional scalar equalizer, which used in the current SDSL systems, is about a 15dB gain in mean squared error (MSE). It significantly suppresses the crosstalk degradation and ensures the quality of service (QoS) on the SDSL transmission throughput. Moreover, the enhancement of the SDSL receiver can benefit on the extension of the SDSL deployment coverage range and also guarantees its promising data rates on increasing numbers of customer subscribers.

show abstract

Recent progress in Multiuser Detection

Cited by 82 publications

References 18 publications

Adaptive Multiuser Detection

Adaptive Multiuser Detection

Adaptive decorrelating detectors for CDMA systems

Mitigation of crosstalk on the SDSL upstream transmission with vector equalization

Contact Info

Product

Resources

About