METHOD AND SYSTEM FOR MULTIPLE-CHANNEL ACCESS AND MESSAGE EXTENSION SPECTRUM FOR INFORMATION EXCHANGE BETWEEN MULTIPLE STATIONS USING ENCODED SHARE OF EXTENSION SPECTRUM COMMUNICATION SIGNALS

摘要

FIELD: digital multiple-channel access systems. SUBSTANCE: differential modulation provides optimal decoding of encoded information signal which is included in other overlapped signals which form received integral signal. Radio receiver correlates integral signal and unique code which corresponds to source signal which should be decoded. After decoding of each information signal, it is encoded again and removed from integral signal. Differential modulation in digital multiple-channel access system is amplified by means of decoding of integral signal in ascending order of signal intensity. Noise which is caused by presence of information signal of largest intensity and integral signal during decoding of signals of lesser intensity is removed. Separate information signals are equipped with unique code 44 for error correction which is correlated with integral signal by means of fast Walsh transform. Signals that have been correlated are encoded again using inverse fast Walsh transforms and removed from integral signal. EFFECT: increased functional capabilities, increased precision. 35 cl, 10 dwg øøø1