Patent ID: 7061881

Claim:
Method of determining a transmission power of transmitted pilot symbols used for estimating channel coefficients by replacing useful signals in a transmission frame of a multicarrier transmission system with OFDM-CDMA, MC-CDMA, MC-CDM or MC-SS-MA frequency domain spreading sequences the method comprising: a) determining a performance level to be achieved by the transmission frame; b) deducing the signal to noise ratio level from the performance level to be achieved; c) deducing a single code transmission power Q 0 of the pilot symbols for a single spreading code from the signal to noise ratio level; d) deducing an increase in power α for transmitting the pilot symbols using a number of spreading codes K; and e) determining, at predetermined times, the transmission power Q of the pilot symbols based on the following equations: Q=α ( K −1)+ Q 0 , K >1, α>0, and Q 0 >α.