Accession Number : ADA190009

Title :   Direct Bit Detection Receiver Noise Performance Analysis for 32-PSK and 64-PSK Modulated Signals.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Ahmed, Iftikhar

Report Date : DEC 1987

Pagination or Media Count : 90

Abstract : Simple two channel receivers for 32-PSK and 64-PSK modulated signals have been proposed which allow digital data (namely bits), to be recovered directly instead of the traditional approach of symbol detection followed by symbol to bit mappings. This allows for binary rather than M-ary receiver decisions, reduces the amount of signal processing operations and permits parallel recovery of the bits. The noise performance of these receivers quantified by the Bit Error Rate (BER) assuming an Additive White Gaussian Noise interference model is evaluated as a function of Eb/No, the signal to noise ratio, and transmitted phase angles of the signals. The performance results of the direct bit detection receivers (DBDR) when compared to that of convectional phase measurement receivers demonstrate that DBDR's are optimum in BER sense. The simplicity of the receiver implementations and the BER of the delivered data make DBDR's attractive for high speed, spectrally efficient digital communication systems.

Descriptors :   *DETECTION, *DIGITAL SYSTEMS, *RECEIVERS, *SIGNAL PROCESSING, *SIGNAL TO NOISE RATIO, *SYMBOLS, ANGLES, DATA BASES, DUAL CHANNEL, ERRORS, INTERFERENCE, MODELS, NOISE, PARALLEL ORIENTATION, PERFORMANCE(ENGINEERING), RATES, RECOVERY.

Subject Categories : Command, Control and Communications Systems
      Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE