[논문]무선채널의 구현(실험)

소개

무선채널, Gaussian, flat fading, frequency selective 채널들에 대해
매트랩으로 시뮬레이션 하여 실험한 것을.
정리한 자료.

목차

1. Introduction about the experiments.
2. Additive white Gaussian channel (AWGC).
3. Flat fading channel.
4. Frequency-selective fading channel - Indoor A.
5. Frequency-selective fading channel - Indoor B.
6. Indoor A vs. Indoor B
7. All error rates.

본문내용

Introduction about the experiments.
The direct real implementation of the channel requires huge amount of budget. Additionally, it takes too much time to measure the result each time. Therefore, the simulation of channel done by the computer program is widely used. The famous programs for this simulation are Matlab, Mathematica, and so on. I used Matlab R2007b version for this virtual implementation of channels. The experiment channel models are Gaussian noise channel, flat-fading channel, and frequency-selective channels with 2 conditions. With the change of some condition such as SNR value and iteration times, I got the following screenshots: input signal and received signal, input signal and processed signal, and BER in fraction scale and log scale. Following experiments do not consider the additional random conditions. In other words, I just adjust the assumption that the channel works without errors except the noise and Rayleigh random number. Additionally, I also assumed that the bits in a packet go though only one channel without change of channels.the following text means that the signal is synchronized with the threshold.

참고자료

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