Dissertations no 1570 efficient mimo detection methods mirsad čirkić division of communication systems department of electrical engineering (isy) linköping this thesis addresses the general mimo detection problem in two ways one d on near-optimal very large multi-user mimo detection 165 1. Mobile is only concerned with its own signal while the base station must detect all the signals simultaneously multi-user reception in this thesis is therefore aimed primarily at the base station receiver design for users within the cell of interest uncoded multi-user receivers multi-user receivers are designed to detect all data. Multi-user detection mohit garg abstract in a cdma system, many users simultaneously transmit across the entire frequency band and some sub-optimal approaches to multi-user detection that have been proposed munication systems,” master's thesis, indian institute of technology,. This thesis presents techniques that lessen the e ects of near-far problem through power control multiuser detection, and interference avoidance for general signature sequence sets, the optimum multiuser detector has exponential computational complexity in number of users this thesis identi es a class of signature. Frequency and phase offsets to the transmitted signals of these channel impairments, this thesis mainly focuses on timing offsets and mai the receiver consists of two parts, a synchronization unit and a multiuser detector the synchronization unit estimates the time, frequency and phase offsets of all users and corrects the.
This thesis proposes some novel multi-user detection techniques based on di er- ent criterions (ie, mmse, ml, and mber) particularly suited for multi-carrier cdma systems, both in the single- and multi-antenna cases moreover, it considers the use of evolutionary strategies (such as ga and pso) to channel estimation. Error rate at the detectors, which is termed minimum bit error rate multiuser trans- mission, txminber this chapter is the main contribution of this thesis starting from a discussion of performance measures in the presence of deterministic interference, op- timization objectives are developed and numerical approaches are. Is presented which integrates multiuser detection, beamforming, and rake reception to mitigate cochannel interference and fading the adaptive multiuser detector is formulated using a blind constrained energy minimization division multiple access signals,” phd dissertation, univ minnesota minneapolis, 1995.
Performance evaluation of multiuser detectors with v-blast to mimo channel by mincheol park committee chairman: dr brian d woerner abstract in this thesis, we evaluate the performance of multi-user detectors over an uplink using awgn rayleigh flat fading single-input single-output (siso) and multiple-input.
In this paper we propose a new linear multiuser detector for synchronous cdma systems specifically, the received signal is demodulated using an orthogonal multiuser (omu) receiver that is matched to a set of orthogonal vectors that are closest in a least-squares sense to the signature vectors we show that this approach.
Independent component analysis in ds-cdma multiuser detection and interference cancellation preliminary examination edition thesis for the degree of doctor of technology to be presented with due permission for public examination and criticism in tietotalo building, auditorium tbxxx, at tampere.
In this thesis we will concern ourselves with multiple input multiple output channels this thesis we distinguish between three types of mimo systems, for which some exemplary channel models will be given below 1 central transmitter and multiuser detection problem [ver98], which we will not discuss in much detail. Is the rectangular pulse shaping waveform 211 s c rea d in g s efl u en c e s there exist several types and lengths of code sets used in cdma systems in this thesis however, only wh and gold codes will be considered each set of codes offer different properties, although for the application of multiuser detection and.