Unformatted text preview: μ > σ τ /T s , where T s is the symbol period. All this says is that the duration of the cyclic pre±x must be larger than the RMS delay spread, but it also must be an integer number of symbol periods. 7c: The peak to average ratio (PAR) of a signal is the maximum instantaneous power of the signal divided by the average power of the signal. For OFDM signals, it is equal to N , the number of subchannels. 7d: Following the results of section 12.6 in the handout, R = 48 subcarriers 3 / 4 bit 1 coded bit 2 coded bits 1 subcarrier symbol 1 subcarrier symbol 4 × 106 sec results in R = 18 Mbps....
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 Spring '10
 Dr.NealPatwari
 Division, Frequency, Signal Processing, Bit rate, Wave mechanics, Kilobit

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