hw8 - w [ k ] can be generated by flltering u [ k ]...

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EE 5501 Prof. N. Jindal Digital Communication Dec. 2, 2009 Homework 8 Due: Wednesday, Dec. 9, 1:00 PM 1. 5.9 (a) and (b) 2. In this problem we will implement difierent equalizers for the running example from pg. 201 (assuming BPSK modulation). (a) Implement MLSE using the Viterbi algorithm. In order to assist you with this, recall that MLSE is performed on the matched fllter outputs, which are given by: z [ n ] = X k b [ k ] h [ n ¡ k ] + w [ n ] where w [ n ] = Z 1 ¡1 n ( t ) p / ( t ¡ nT ) dt: The random process w [ n ] is correlated Gaussian noise. If u [ n ] represents uncor- related Gaussian noise (with unit variance), verify that
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Unformatted text preview: w [ k ] can be generated by flltering u [ k ] according to the following equation: ± p 3 ¡ p 5 u [ k ] ¡ ± 2 ( q 3 ¡ p 5) u [ k ¡ 1] : Using this equation you should be able to generate the matched fllter outputs (based on h [ ¢ ] and the random values of b [ k ]). Implement MLSE, and then produce a plot of the bit error rate versus ± 2 (the noise variance). (b) For the same matched fllter outputs, implement the linear MMSE equalizers of length 5, 11, and 21, and for each plot bit error rate versus ± . 1...
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This note was uploaded on 11/21/2011 for the course EE 5501 taught by Professor Lops during the Fall '08 term at Minnesota.

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