Considerations for spread spectrum systems design
Abstract
A formulation is offered for evaluating several conditions which affect implementation of digitally modulated, PN-PSK spread spectrum communication system designs. Examples are offered to show how solutions to certain intractable problems may be approached analytically, including a look at the relative spectral energy distributions in four candidate spreading modulation-keying waveforms. An exact method is provided for evaluation of group-delay-originated differential phase distortion losses applied to both square-wave and cosine-squared waveforms. A method of treating Allan-variance phase-noise degradation is then introduced to permit bounding losses in correlator-despreader performance through proper specification control. A method of channel multiplexing is introduced as a real possibility through correct application of code division multiple access technology, enabling several terminals to initiate traffic while using a common PN code.
- Publication:
-
NTC 1981; National Telecommunications Conference, Volume 2
- Pub Date:
- 1981
- Bibcode:
- 1981ntc.....2....7L
- Keywords:
-
- Code Division Multiple Access;
- Data Transmission;
- Phase Shift Keying;
- Pseudonoise;
- Signal Distortion;
- Spread Spectrum Transmission;
- Systems Engineering;
- Digital Systems;
- Microwave Transmission;
- Millimeter Waves;
- Spectral Energy Distribution;
- Square Waves;
- Waveforms;
- Communications and Radar