Accession Number : ADA193839

Title :   Direct Bit Detection Receiver Performance Analyses for 8-DPSK (Differential Phase Shift Keyed) Modulated Signals Operating with Improper Carrier Phase Synchronization.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Sekerefeli, Mehmet S

PDF Url : ADA193839

Report Date : Dec 1987

Pagination or Media Count : 131

Abstract : The application of Direct Bit Detection methods are analyzed and evaluated in digital communication systems employing Differential Phase Shift Keyed (DPSK) modulation. Assuming an additive white Gaussian noise interference model, and direct bit detection methods used in the receiver, 8-DPSK and 16-DPSK communication systems are considered and their performances evaluated in terms of the delivered bit error rate as a function of signal-to-noise ratio. The advantages and disadvantages of Direct Bit Detection Receiver (DBDR) systems used in conjunction with differential phase encoding are determined, with specific application to 8-DPSK and 16-DPSK modulated signals. The effect of improper receiver carrier phase synchronization is considered in detail, and resulting performance degradations are evaluated. Numerical results show that for receiver phase errors of more than a few degrees, severe performance degradations result for both DPSK modulation schemes, unless a complete phase reversal (i.e., 180 deg.) takes place.

Descriptors :   *DETECTION, *DIGITAL COMMUNICATIONS, *MODULATION, *PHASE SHIFT, *RECEIVERS, *SYNCHRONIZATION(ELECTRONICS), CODING, DEGRADATION, DIFFERENTIAL EQUATIONS, DIGITAL SYSTEMS, ERRORS, HIGH RATE, INTENSITY, METHODOLOGY, NUMERICAL ANALYSIS, PERFORMANCE TESTS, PHASE, RATES, REVERSIBLE, SIGNAL TO NOISE RATIO, SIGNALS, THESES

Subject Categories : Command, Control and Communications Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE