Multiple-access communication using coded pulse interval modulation
Abstract
Certain physical transmission devices are particularly suited to pulsed high-peak-power, low-duty-cycle operation. Two important examples are pulsed laser optical transmitters and pulsed microwave transmitters. A convenient modulation for such transmitters is differential pulse position, also known as pulse interval modulation (PIM). This paper describes techniques for accommodating a large number of uncoordinated multiple-access users, each employing coded pulse interval modulation. After a brief description of the modulation technique and the multiple-access channel it creates, fundamental limitations on the number of users and interference levels are established by determining the channel capacity, C, and the complexity parameter, R sub o. The remainder of the paper is devoted to a coding technique which can achieve performance arbitrarily close to R sub o. Theoretical and experimental results on performance and complexity are presented.
- Publication:
-
Numerical Transmission by Cable, Vol. 1
- Pub Date:
- 1980
- Bibcode:
- 1980ntc.....1...14G
- Keywords:
-
- Multiple Access;
- Pulse Position Modulation;
- Signal Encoding;
- Channel Capacity;
- Pulse Communication;
- Pulsed Lasers;
- Communications and Radar