Abstract
We propose a postdetection phase combining (PC) scheme for the two branch diversity reception of differential phase shift keying (DPSK) over multipath fading channels. The receiver has a differential phase detector (DPD) in each diversity branch, and the combiner weights each detector output in proportion to the vth power of the signal envelope at the detector's input. For π/4-shift QDPSK over frequency-flat Rayleigh fading channels, we find via computer simulation that the optimum weight factor is v = 2, and that our simple, practical combining scheme performs almost as well as postdetection maximal ratio combining (MRC). We demonstrate similar relative performances for frequency-selective fading channels and for channels with cochannel interference (CCI).
Original language | English |
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Pages (from-to) | 298-303 |
Number of pages | 6 |
Journal | IEEE Transactions on Vehicular Technology |
Volume | 43 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1994 May |
Externally published | Yes |
ASJC Scopus subject areas
- Automotive Engineering
- Aerospace Engineering
- Electrical and Electronic Engineering
- Applied Mathematics