Title :
Multitrellis Viterbi algorithm for indoor systems using narrowbeam antennas
Author :
Benvenuto, N. ; Salloum, A.
Author_Institution :
Dipt. di Elettronica e Inf., Padova Univ., Italy
fDate :
8/1/1997 12:00:00 AM
Abstract :
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
Keywords :
Viterbi detection; antennas; error statistics; indoor radio; multipath channels; phase shift keying; radio receivers; 2-PSK signals; 4-PSK modulation schemes; bit-error rate; channel conditions; multitrellis Viterbi algorithm; narrowbeam antennas; performance; receiver robustness; threshold detector; wireless indoor systems; Bit error rate; Delay; Detectors; Performance analysis; Phase detection; Quadrature phase shift keying; Receivers; Robustness; Signal detection; Viterbi algorithm;
Journal_Title :
Communications, IEEE Transactions on
