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¹Ø¼ü´Ê ·ÂÕæ MATLAB QPSK OQPSK

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Title Based on the MATLAB Simulation of the Digital Band

Communication System

Abstract

This paper studies the performance of the digital band transmission. Focus on the basic structure of the transmit filter, the modulator, channel, demodulator, receiver filters and other parts of the simulation. On the basic principle of the digital band Communication to analysis performance of the transmission system.

The first aspect of the use of MATLAB M language to complete QPSK simulation, Obtained in the additive white Gaussian noise channel, the transmission bit error rate, to draw the curve. Compared to the bit error rate with the theoretical value, analyze the transmission performance.

The second aspect is the simulation waveform of QPSK and OQPSK signals after the band-pass. Contrast the two signals the power spectral density figure, the theoretical analysis the transmission properties. Power spectral density map comparison of the two signals, the theory to analyze the transmission performance.

Keywords Simulation MATLAB QPSK OQPSK

II

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