论文信息 - Application of adaptive beamforming for UMTS FDD mode for macrocell environment

Application of adaptive beamforming for UMTS FDD mode for macrocell environment

The work presented in this paper explores utilisation of adaptive beamforming using uniform linear array and uniform circular array with conjugate gradient algorithm applied in UMTS FDD mode in macrocell environment. For modelling of the propagation medium geometrically based single bounce circular model has been used. The simulation environment has been prepared in MATLAB/sup /spl reg// for UMTS FDD mode, and a number of simulations has been performed. Terminal placement has been identified as being the most important issue for beamforming performance.

J. Modelski | Luis M. Correia | T. K. Szymanski

[1] Tomasz Szymański. Impact of the directional channel in adaptive beamforming for UMTS-FDD in macro-cells , 2002 .

[2] J. M. Gil,et al. Impact of Wideband Directional Propagation Channel Characteristics on Adaptive Beamforming(Special Issue on Software Defined Radio Technology and Its Applications) , 2002 .

[3] J. Shewchuk. An Introduction to the Conjugate Gradient Method Without the Agonizing Pain , 1994 .

[4] Luís M. Correia,et al. Combining directional channel modelling with beamforming adaptive antennas for UMTS , 2001, 12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598).

[5] John Litva,et al. Digital beamforming in wireless communications , 1996 .

[6] Kimmo Kettunen,et al. IMPLEMENTATION OF GRAM-SCHMIDT CONJUGATE DIRECTION AND CONJUGATE GRADIENT ALGORITHMS , 1999 .

[7] Luís M. Correia,et al. Dependence of adaptive beamforming performance on directional channel modelled micro-cell scenarios , 2002, The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications.