Experimental Analysis of CDMA System Performance Improvement with Triangle PIFA Antenna Array in an Academic Campus
The adaptive antenna arrays have been regarded as the key solution for increasing the spectral efficiency and improving the system performance in 3G and 4G mobile communication systems. Although the implementation of adaptive antennas is mainly inwstigated in the Base Transceiver Station, BTS, it is interesting to evaluate their performance at the mobile level. The purpose of this paper is to analyze the results of the propagation measurcmcnts carried out at 1.9GHz in a CDMA system with Triangle PIFA Antenna Array, not only in the signal transmission, but also in its reception, with the aim of acquiring a suitahle prototype, that can be applied to adaptive antenna systems. Different
wireless environments. such as suburhan. indoor and woody were exploited, with line-of-sight (LOS) and non-line-of-sight (NLOS) scenarios. The analysis of results was based on attenuation prediction and comparisons with the received signal by a traditional monopole that is still very used in handsets. Besides, this work describes the Triangle PIFA Antenna Array and monopole prototypes and analyzes their main features in terms of return loss and radiation pattern.
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