Performance of Direct Bit Detection Receivers for Multiple Level Phase- Shift-Keyed Modulation
Abstract
A new receiver algorithm for M-ary Phase-Shift-Keyed modulation is proposed which provides for direct bit detection(DBD) instead of the traditional approach of symbol detection followed by bit regeneration. DBD eliminates the intermediate step of symbol detection and bit regeneration, reduces the amount of computation, allows for binary rather than M-ary decisions; and permits parallel regeneration of bits. All these factors provide an attractive scheme for high speed digital implementation. Receiver structures for DBD of 8-PSK and 16-PSK signals are proposed and the resulting bit error rates(BER) analyzed for transmission over an additive white Gaussian noise channel. In both cases, receiver structures are developed which provide no loss in BER performance when compared to that of conventional phase detection receivers. The proposed receivers' performance was analyzed alongside channel coding techniques. Coding gains of 2.5-5 dB at a BER of 0.00001 were shown to be feasible with simple block or convolutional codes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1986
- Accession Number
- ADA173564
Entities
People
- Chee S. Tan
Organizations
- Naval Postgraduate School