| 摘要 |
A method of determining an acquisition indicator bit AIs at a receiver in a communication system which includes receiving multiplexed acquisition indicator bits y = B x AI + n, where B is the signature matrix known at both base station and the receiver, is all the acquisition indicator bits and n represents noise. Next, an estimated value of the acquisition indicator bit AÎML (s) as a function of formula (I) is calculated, where B<T> (s,.) is the s-th row vector of the transposed matrix B<T >for acquisition indicator bit AIs. Finally, the acquisition indicator bit AIs is set as follows: AIs = -1, if AÎML (s) <R AIs = 0, if R <=AÎML (s) <U AIs = 1, if AÎML (s) >= U, where R and U are decision thresholds. |
