ANALYSIS PERFORMANCE MIMO CDMA WITH DIFFERENT CODE SPREADING ON RAYLEIGH CHANNEL FADING

TESIS

Abstract

By : Rezamal Ilham

Email : rezamal.ilham@gmail.com

Faculties : Fakultas Teknik

Department : S1 Teknik Elektro

On this research,we will do an analysis performance MIMO CDMA system with a different spreading code on rayleigh fading channel with a simulation. First, we will compare the spreading code walsh on SISO with MIMO CDMA with only 1 user of spreading factor = 8.Second, how’s influence the different spreading code on the value of spreading factor that is different. The succesful barometer of the system will be observed based on the relation BER value and SNR. From the simulation performance walsh spreading code on system SISO with only 1 user for Spreading Factor = 8 happens a significant number of change when SNR began at 4 dB and the number BER SISO 0.0507 and number BER MIMO 0.0391. And the result SNR start from 4 dB higher ,Because the antenna has been added on Transceiver 2Tx and Receiver 2Rx. From the simulation on How’s the influence on different spreading codes on a different value Spreading Factor that almost the same with MIMO CDMA System only 1 user. For walsh code spreading factor = 4, 8, 16 happens a significant number of change when SNR began at 9 dB and the number BER = 0.00012 0.0009 , 0.0006. For factor 16 is much better than the other code. Because the more length value the spreading factor, the performance are much better.

Keyword : Spread spectrum, CDMA, MIMO, spreading code

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