| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 100 === The main objective in this paper is to explore the use of turbo encoder and the signal which use OFDM(Orthogonal frequency-division multiplexing) modulation. For broadband power line communication systems, we wonder whether it will get the better error correction capacity at the front-end receiver. In this paper, the environment is assumed that in the home building ; It produces some unexpected impulse noise thanks to turn the electric equipment on and off Occasionally. Here we adopt Impulse noise model to simulate the characteristics of this channel, it’s more appropriate.
In this paper we use Additive White Class A Noise (AWAN) channel to simulate broadband power line environment, which is the more common model of power line noise model currently; the overall architecture is based on the part of the physical layer in IEEE 1901 standard, and we select the 1901 Frame Control mode to create it. By using computer software to simulate the widely used receiver, and we can analyze the bit error rate. In order to reduce the large noise in the environment, we also use the limiter to improve the decoding performance in this paper.
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