In the multiuser detection literature, this detector is frequently referred to as the conventional detector. The applications of decisionlevel data fusion techniques in. This is known as multiuser detection and was proposed by sergio verdu. Multiuser detection encompasses both receiver technologies devoted to joint detection of all the interfering signals or to singleuser receivers which are interested in recovering only one user but are robustified against multiuser interference and not just background noise. Pdf multiuser detection for asynchronous argos signals. Handset must separate the signal intended for it from others. This selfcontained and comprehensive book sets out the basic details of multiuser detection, starting with simple examples and progressing to stateoftheart applications.
Pioneering the area of multiuser detection, verdu found an upper bound of gml ber 12, which indicates the vast performance gap between the gml and the conventional mf detectors. Conducted at the coordinated science laboratory of the university of illinois, his doctoral research pioneered the field of multiuser detection. Iterative receiver for joint detection and channel estimation in ofdm systems under mobile radio channels. In this paper, iterative multiuser detection techniques for multibeam communications are presented. Chaturvedi, senior member, ieee abstractthe maximumlikelihood multiuser detection tion is reduced to a form suitable for the application of a compu problem in codedivision multipleaccess is known to be an tational geometry. His awardwinning 1998 book multiuser detection, for instance, is still frequently used by researchers and systems designers in wireless communications networks. In particular, the nearfar resistance of a dpsk multiuser detector, the mth user asymptotic efficiency of which is vrn, is defined as. Then two novel mud algorithms, that is the chairman arbitrating decisionlevel fusion criterion cadfc based mud algorithm and the veto logic. Multiuser detection foundations and trends in communication.
Cambridge university press 9780521593731 multiuser. Theoretical analysis and practical schemes giulio colavolpe, senior member, ieee, andrea modenini, amina piemontese, member, ieee, and alessandro ugolini abstract we consider the rates achievable by a user in a multibeam satellite system for unicast applications, and. Mandic 0 0 communications and signal processing group, department of electrical and electronic engineering, imperial college london, south kensington campus, london. This paper provides the performance analysis of multiuser vertical bell laboratories layered spacetime vblast system receiver structures for multipleinput multipleoutput mimo channel at a base station with assumption of perfect channel estimation and perfect timing delay estimation.
Cnn based multiuser detection and equalization in wireless. Originally published in 1998, multiuser detection provides a comprehensive treatment of the subject of multiuser digital communications. Verdu now serves as editorinchief of foundations and trends in communication and information theory, a monograph series that he developed and for. The development of multiuser detection techniques is one of the most important recent advances in communications technology.
A family of likelihood ascent search multiuser detectors. Multiuser detection ee57 advanced digital communications 12 week 1415. Blind multiuser detection is discussed, and in particular, it presents a multiuser detector which is optimally nearfar resistant and requires no more knowledge than the conventional singleuser. Depending on course enrollment, a short project might be added. It is therefore an optimal minimum mean square error detection algorithm. Multiuser detection multiuser detection uplink channel from a handset to a base station. Due to this, multiuser detection strategies have been proposed in 34. This cited by count includes citations to the following articles in scholar. The matched filter in the cdma channel this section is concerned with the analysis of the capabilities and performance of multiuser detection using the simplest detector. Science of information the logic of biological networks. By exploiting that structure, multiuser detection 7 can increase spectral efficiency, receiver sensitivity, and the number of users the system can sustain. National academy of sciences in 2007 and 2014, respectively. Adaptive multiuser detection sergio verdh department of electncal engineering pnnceton university princeton, nj 08544, usa 1. Multiuser detection and statistical physics semantic scholar.
Versal interpretation of multiuser detection relates the multiuser. Computational complexity of optimum multiuser detection. Sergio verdu massachusetts institute of technology. He also proposed the asymptotic multiuser efficiency ame as a performance measure in high snr regime. Cdma multiuser detection mud is a crucial technique to mobile communication. Section 7 is devoted to multiuser detection using learning neural networks 2. Multiuser detection deals with demodulation of the mutually interfering digital streams of information that occur in areas such as wireless communications, highspeed data transmission, satellite communication, digital television, and magnetic recording.
Multiuser detection provides the first comprehensive treatment of the subject of multiuser digital communications. Budapest university of technology and economics, department of. Veselinovic n, matsumoto t and juntti m 2005 iterative pdf estimationbased multiuser diversity detection and channel estimation with unknown interference, eurasip journal on advances in signal processing, 2005, 872882, online publication date. Pdf we present a framework for analyzing multiuser detectors in the context of statistical mechanics. Information, estimation and multiuser detection dongning guo a dissertation presented to the faculty of princeton university in candidacy for the degree of doctor of philosophy recommended for acceptance by the department of electrical engineering november, 2004. In the last two decades, a great variety of multiuser detectors were proposed in the literature with the intention of performance improving compared to the conventional detection. Sergio verdu born barcelona, spain, august 15, 1958 was the eugene higgins professor of electrical engineering at princeton university, where he taught and conducted research on information theory in the information sciences and systems group. Introduction spurred by its applications in code dlvision multiple access. Cdma multiuser detection based on improved particle swarm. Thus, based on their mathematical formulations, detection. This conventional wisdom was proven wrong by the derivation and analysis of the optimal multiuser detector by sergio verdu, who showed that there is, in general.
Varanasi, senior member, ieee abstract a systematic approach to decision feedback multiuser detection is introduced for the joint detection of symbols of k simultaneously transmitting users of a synchronous correlated waveform multipleaccess cwma channel with gaussian. We apply belief propagation bp to multiuser detection in a spread spectrum system, under the assumption of gaussian symbols. Multiuser detection for synchronous dscdma in awgn. We present a framework for analyzing multiuser detectors in the context of. Verdu multiuser detection, advances in detection and estimation, jai press, 1993. An implementation of nonlinear multiuser detection in.
The only prerequisites assumed are undergraduatelevel probability, linear algebra, and digital communications. Multiuser detection in multibeam satellite systems. A graphical representation of the multiuser communication problem. Pdf multiuser detection and statistical mechanics researchgate. Multiuser detection seeks to enhance the performance of nonorthogonal signaling schemes for multipleaccess communications by combating mai caused by the presence of more than one user in the channel. Lupas and verdu 1989 proposed the pe rformance achieved by linear multiuser detectors whose linear memory transformation is a generalized inverse of the matrix of signature waveform cross. Multiuser detection is one of the most important areas in modern communications technology, and this selfcontained book covers the whole field, starting with simple examples and progressing to complex applications. Comparison of ber and nearfar effect has verified its effectiveness on multiaccess interference mai. Mandic 0 0 communications and signal processing group, department of electrical and electronic engineering, imperial college london, south kensington campus, london sw7 2az. Cambridge university press 9780521593731 multiuser detection sergio verdu. Multiuser detection and statistical physics dongning guo and sergio verdu. Emre koksal, entitled linear multiuser receivers for this seminar is. Verdu, computational complexity of optimum multiuser detection,algorithmicavol. Multiuser detection, statistical mechanics, codedivision multiple access, spin glass, self.
Introduction to spread spectrum communications multiuser. For noncoherent multiuser detection, we introduce a modification of this measure to reflect the lack of both energy as well as phase information at the receiver. In this paper, the decisionlevel data fusion techniques are extended to the multiuser detection mud field. Any multiuser detector will utilise the information available in the mai term to demodulate the signal and will not treat it like a noise term. Hindawi publishing corporation eurasip journal on wireless communications and networking volume 2006 an implementation of nonlinear multiuser detection in rayleigh fading channel wai yie leong 0 1 john homer 1 danilo p. Cnn based multiuser detection and equalization in wireless communication systems j. The behaviour of vertical bell laboratories layered space. Citeseerx probability of error in mmse multiuser detection. Chaturvedi, senior member, ieee abstractthe maximumlikelihood multiuser detection tion is reduced to a form suitable for the application of a compu problem in codedivision multipleaccess is known to be an tational. The performance analysis of optimum multiuser detection in terms of the set of multiuser asymptotic efficiencies is equivalent to the computation of the minimum euclidean distance between any pair of distinct multiuser signals. Multiuser detection for synchronous dscdma in awgn channel. Pdf application of computational geometry to multiuser. In his book 9, verdu developed, analyzed and evaluated some multiuser detection techniques.
We prove that bp is both convergent and allows to estimate the correct conditional expectation of the input symbols. Dscdma multiuser detection with evolutionary algorithms. This concept is ideologically similar to utilising. We adopt improved particle swarm optimization pso algorithm in mud which incorporates factor and utilizes function to discrete pso. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext.
1476 548 235 1109 1304 1297 1272 433 1344 784 1151 1186 1240 1430 534 1410 698 957 196 889 1230 476 704 1131 1035 1358 981 447 163 28 1220