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Multitrellis Viterbi algorithm for indoor systems using narrowbeam antennas

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2 Author(s)
Benvenuto, N. ; Dipt. di Elettronica e Inf., Padova Univ., Italy ; Salloum, A.

In earlier work, the performance (in terms of data eye closure) of a threshold detector in 2- and 4-PSK modulation schemes has been analyzed for wireless indoor systems using narrowbeam antennas. Here, assuming the channel is known, a very efficient implementation of the Viterbi algorithm (VA) is included in the receiver, and a bit-error rate (BER) criterion is used to evaluate the receiver robustness to channel conditions. In contrast to the earlier work, it is seen that 4-PSK signals with VA detectors are indeed more robust than 2-PSK signals to channel conditions

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Communications, IEEE Transactions on  (Volume:45 ,  Issue: 8 )