Determining transmit signal powers of channels in a cdma...

Details Determining transmit signal powers of channels in a cdma... Determining transmit signal powers of channels in a cdma...

H - Electricity

04

B

H04B 7/005 (2006.01) H04B 1/707 (2006.01) H04Q 7/34 (2006.01)

Patent

CA 2298289

A plurality of data channels provide respective data rates and maximum error rates from a mobile station to a base station of a CDMA system; a pilot channel facilitates recovery of the data channels. For each data channel there is determined a channel energy to noise ratio (ENR) and a required pilot channel ENR. A maximum one of the required pilot channel ENRs is selected as an ENR for transmission of the pilot channel. A relative gain, and hence transmit signal power, for each data channel is determined from the ENR determined for the data channel and the selected maximum ENR for transmission of the pilot channel, thereby minimizing the total transmitted signal power of the mobile station. The data channel signals are spread using orthogonal Walsh codes and are combined with their determined relative gains.

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