Patent ID: 7062242

Claim:
A method for path gain compensation in a cellular base station transceiver to adjust a digital signal for losses in the base station, said transceiver including a digital to analog converter, said method comprising the steps of: periodically computing a path gain compensation factor based on the state of the cellular base station; computing replacement signal levels for a plurality of possible levels of said digital signal input to said digital to analog converter, said replacement signal levels being equivalent to said digital signal levels, adjusted with said path gain compensation factor; periodically storing said replacement signal levels in an inactive block in a dual port ram through a first port, said dual port ram receiving said digital signal at a second port and for each sample of said digital signal, outputting one of said replacement signal levels to said digital to analog converter from said active block; inverting the binary state of at least one address line common to said first port and said second port of said dual port ram so as to activate said block with said replacement signal levels and direct an input digital signal to said dual port ram, to said active block; outputting from said dual port ram the replacement signal level stored at the address location pointed to by the binary value of the digital signal received through said second port and the present state of said at least one address line to said dual port ram; and receiving said output replacement signal level by said digital to analog converter.