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Orthogonal frequency division multiplexing (OFDM) signal has a high momentary peak-to-average power ratio (PAPR), since it is superimposed by many independent subcarriers. Because it does not cause distortion and is easy to realize, the selected mapping (SLM) scheme is a very attractive one among various PAPR reduction solutions. However, conventional SLM (C-SLM) scheme has unbearable computational...
This paper introduces a method to estimate and compensate the underground cable's transmit characteristics by using the time-domain equalization and frequency-domain equalization. We have simulated the whole process of channel estimation, and the length of the cyclic prefix (CP) has been effectively reduced. The results show that the inter symbol interference (IS I) can be obviously eliminated. The...
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