Title :
The advantages of VPSK modulation for data transmission: 10 bits/Hz data compression without loss of signal power
Author :
Walker, Harold R.
Abstract :
VPSK modulation is a new and as yet little known modulation method that compresses the RF data transmission bandwidth 10/1 or 12.6/1. Unlike other compression methods such as QAM, VPSK does not suffer a loss of S/N with increasing compression. VPSK is BPSK modulation with the data encoded prior to transmission by Single Sideband FM-SC. This results in an Eb/η value that is theoretically better than that for QPSK, even though the occupied bandwidth is only 1/5 as large. Eb/n values of 14 dB for 10-6 BER are being obtained in the field at 10 bits/Hz compression. Due to this low Eb /η, VPSK is the only high compression method suitable for use on satellites
Keywords :
Bandwidth; Binary phase shift keying; Bit error rate; Bit rate; Data communication; Data compression; Encoding; Magnetic force microscopy; Propagation losses; Quadrature phase shift keying;
Conference_Titel :
WESCON/'95. Conference record. 'Microelectronics Communications Technology Producing Quality Products Mobile and Portable Power Emerging Technologies'
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-2636-9
DOI :
10.1109/WESCON.1995.485424
