By Topic

A reduced state variant of maximum likelihood sequence detection attaining optimum performance for high signal-to-noise ratios

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)

In the detection of m -level pulse-amplitude modulation (PAM) signals transmitted over a noisy linear \nu -symbol memory channel, maximum likelihood sequence detection (MLSD) is asymptotically optimum in the sense that the exponent of the probability of symbol error in the limit of small noise is the largest that can be achieved by any detector. A reduced state detection (RSD) is developed with the aim of mitigating the computational complexity of MLSD while attaining the same error exponent as MLSD. In RSD, for each baud, the recent received signal levels delineate a certain list of the most probable of the m^{\nu} possible states. Retention of only the paths threading through these most probable states is the key to success of RSD. Suppose it is required that the number of states retained at any time not exceed \psi . When \psi is less than the number of states required for RSD, it is shown how to modify RSD so that no more than \psi states are retained and how to assess the degradation of the error exponent.

Published in:

IEEE Transactions on Information Theory  (Volume:23 ,  Issue: 5 )