| Summary: | 碩士 === 國立臺灣科技大學 === 電子工程系 === 88 === In this thesis, we propose the design of adaptive antenna array receiver to cancel interference of multipath Rayleigh fading for code division multiple access mobile communication system. The Pseud-random noise code is employed in multipath fading cross correlation environment in which the receiver is the decorrelating detector. We concentrate on real time technigue in the receiver, we only receive the first arrival fading path, and the fading coefficient of the first arrival path is estimated by decorrelator detector. The fading coefficient provides the reference signal for the adaptive antenna array. This structure can solve multipath Rayleigh fading interference. Therefore, we don’t have to estimate the angle and time of the arrival multipath. The Rayleigh fading channel coefficient due to Doppler effect, is generated by a channel simulator. Multipath Rayleigh fading channel is made up of one signal through several Rayleigh fading channel. we compare, by simulation, the performance of equal power multipath and nonequal power ones in term of BER. The BER is compared with single path bound. The design can cancel interference of CDMA coherent signal of multipath Rayleigh fading by simulation result.
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