DIRECTION OF ARRIVAL ESTIMATION IN MOBILE COMMUNICATION ENVIRONMENTS

means of computing the weights of an optimal beamformercapable of maximizing the signal-to-interference plus noiseratio (SINR) in a coherent environment. EVESPA has alsobeen considered in [3] under a slight variation for t heproblem of direction of[r]

EURASIP Journal on Applied Signal Processing 2004:9, 1308–1320c 2004 Hindawi Publishing CorporationSystem-Level Performance of Antenna Arraysin CDMA-Based Cellular Mobile Radio SystemsAndreas CzylwikDepartment of Communication Systems, University Duisburg-Essen, 47057 Du[r]

Correspondence should be addressed to V´aclav Valenta, vaclav.valenta@ieee.orgReceived 7 June 2010; Revised 20 August 2010; Accepted 16 September 2010Academic Editor: George TombrasCopyright © 2010 Martha Liliana Suarez Penaloza et al. This is an open access article distributed under the Creative Co[r]

is transmitted periodically for synchronization purposes).Alternatively, this assumption also holds if the positioningis performed after the data has been detected with negligibleprobability of error.Since we focus on single user decoder, we cannot assumeany knowledge about the interfering us[r]

Proceedings of the 13th Conference of the European Chapter of the Association for Computational Linguistics, page 602,Avignon, France, April 23 - 27 2012.c2012 Association for Computational LinguisticsLearning Language from Perceptual ContextRaymond MooneyUniversity of T[r]

. (23)For example, from Figure 7, it can be shown, using (23), thatthe maximum number of users allowed in a six-sectored cellto the ones in a system with an omnidirectional antennais almost five times greater (Λ∼=4.8∼4.9). Capacity interms of the maximum number of u[r]

radar applications. Some of the conventional techniques thatcan be used to estimate the signal direction and its associatedmultipaths include MUSIC [1], spatially smoothed MUSIC[2, 3], maximum likelihood methods (MLM) [4], and esti-mation of signal parameters via rotational inva[r]

to the channel parameters [1]. One of the most impor-tant parameters is the multipath angular spread (AS).For instance, the beamforming technique is to be con-sidered when the AS is relatively small, while antennadiversity is more appropriate in other cases. Moreover,mean angle of