Avalia??o de desempenho da t?cnica de multiplex espacial na presen?a de interferencia de Co-canal

Description: Spatial multiplexing technique, consisting of independent symbol transmission on multiple transmission antennas, has been proposed to meet the requirement for higher data rates of future wireless broadband communication systems. However, when spatial multiplexing technique is applied to a cellular network, the performance is affected by co-channel interference. This work evaluates and compares the effects of co-channel interference on the mean bit error rate, BER, of spatial multiplexing systems and single transmission antenna systems, where transmit power and spectral effciency parameters are taken into consideration, in order to make a fair comparison between both systems. The downlink of a cellular network in slowly-varying at Rayleigh fading environment and in the presence of a dominant co-channel interferer is considered. Furthermore, the use of Optimum Detector on the receiver and BPSK, QPSK and M-QAM modulations is also considered. Monte Carlo simulations are realized for obtaining the performance in terms of the BER as a function of per-bit signal-to-noise ratio, Eb=N0, and signal-to-interference ratio, SIR. The evaluation and comparison performance results between spatial multiplexing and a single transmission antenna systems presented in this work, are important tools in order to know the real bene-ts of spatial multiplexing technique applied to a cellular network, as the standards WiMAX or LTE.

Topic: COMUNICACIONES M?VILES
MULTIPLEXACI?N
MODULACI?N DIGITAL
TRANSMISORES Y RECEPTORES DE RADIO

Get full text: http://repositorio.educacionsuperior.gob.ec//handle/28000/1464