An Efficient Algorithm for the Spectra of Block Coded PAM Signals.
Abstract
The power spectral density of multi-level coded sequences has been an important factor in the design of PCM transmission schemes. The spectral density for symbol-by-symbol encoding schemes was first derived by Bennett. In the past few years, several algorithms for block encoded schemes have been proposed. The most recent algorithm is based on a generalization of Bennett's formula and a compact notation for finite state machine encoders. This paper derives closed form expressions for the covariance sequences of multi-level block coded sequences and relates these covariance coefficients to Bennett's formula such that the ensuing algorithm is more efficient in time and memory. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1977
- Accession Number
- ADA042648
Entities
People
- Val Di Euliis
Organizations
- University of Illinois Urbana–Champaign