Patent ID: 7027485

Claim:
A method of discriminating a received spread spectrum signal among a plurality of received spread spectrum signals that are transmitted over a transmission channel, said method comprising the steps: despreading said received spread spectrum signal, thereby using a locally generated pseudo noise sequence with a given phase offset; quantizing the despread received spread spectrum signal so as to obtain a probability mass function estimate of the despread received spread spectrum signal; determining a difference between said probability mass function estimate and a true probability mass function corresponding to a transmitted spread spectrum signal before transmission over said transmission channel, said transmitted spread spectrum signal having been generated using a pseudo noise sequence that corresponds to said locally generated pseudo noise sequence with said given phase offset; accumulating said difference over a predetermined number of symbols conveyed by said transmitted spread spectrum signal so as to obtain a statistic of said received spread spectrum signal; and rejecting said received spread spectrum signal if said statistic fails a test against a given threshold, and accepting said received spread spectrum signal if said statistic passes said test.