discrete_time_notes

discrete_time_notes - : SNR = signal power noise power = P...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
EE 5505 Prof. N. Jindal Digital Communication Feb. 11, 2010 Discrete-time channel model (after matched filter) of received complex symbol: y [ n ] = b [ n ] + z [ n ] 1. One complex symbol received every T seconds, with T = 1 /B , where T is the symbol period and B is the one-sided bandwidth. 2. E s : Average energy of a complex symbol 3. z[n]: complex Gaussian noise, with iid N (0 , N 0 / 2) components (iid across n and across real/imaginary components) Signal-to-noise-ratio (SNR)
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: : SNR = signal power noise power = P N B = E s N = signal energy per symbol noise energy per symbol Channel Capacity : Maximum rate of reliable communication over an AWGN channel with one-sided bandwidth B , noise spectral density N / 2 (passband), and signal power P : C = log 2 (1 + SNR) = log 2 ( 1 + P N B ) bits/complex symbol = B log 2 ( 1 + P N B ) bits/sec . 1...
View Full Document

This note was uploaded on 11/21/2011 for the course EE 5505 taught by Professor Jindal,n during the Spring '08 term at Minnesota.

Ask a homework question - tutors are online