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This paper evaluates the effect of the channel estimation inaccuracy on the performance of an HSDPA system. This study provides some results from system level simulations that have been conducted over a very complete dynamic simulator which models an HSDPA system full compliant with specifications. This emulator allows performing multi-user transmission and link adaptation with a limited modulation...
This paper proposes a dynamic resource allocation (DRA) algorithm for WCDMA systems for non-real time data services using a Hopfield neural network (HNN). Previous works have demonstrated the utility of HNN to implement DRA algorithms in the uplink due to the high computational speed of its hardware implementation and the maximization of the total allocated bandwidth. This paper presents an enhanced...
This paper presents a comparative analysis of system-level TD-CDMA simulation results obtained for different shadowing simulation models. Namely, relevance of aspects such as cross-correlation or spatial autocorrelation of shadowing is studied. It is shown that, in terms of system capacity, modelling of cross-correlation plays a more important role than spatial autocorrelation. Another relevant issue...
Joint power control and optimal beamforming (JPCOB) algorithms are very promising techniques in order to implement MIMO configurations in WCDMA systems as, for example, 3G. In this paper we have used a JPCOB algorithm that supports multiple antennas in the node B, but with different arrangements of the antenna array position: we compare the classic approach of a central location in contrast with a...
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