Patent ID: 8005152
Filing Date: 2011-08-23
Classification: H03M,H04W

Abstract:
1. In a base transceiver system of a wireless communication network, a method for transferring communication data for transmission to wireless subscribers, including generating signal samples of a plurality of baseband antenna-carrier channels in a baseband processor for transfer to a radio frequency (RF) unit over a serial data link, the plurality of baseband antenna-carrier channels including at least one particular baseband antenna-carrier channel comprised of signal samples for a composite of signals to be transmitted to multiple wireless subscribers, each signal sample associated with one of the plurality of baseband antenna-carrier channels, wherein each signal sample includes an in-phase (I) sample and a quadrature (Q) sample, the RF unit including a digital up converter (DUC) that upconverts a sequence of signal samples of the plurality of baseband antenna-carrier channels to a plurality of upconverted antenna-carrier channels to form a single upconverted digital signal comprised of upconverted signal samples from the plurality of upconverted antenna-carrier channels, and a digital to analog converter (DAC) that converts the upconverted digital signal to an analog signal, wherein the RF unit is coupled to an antenna to transmit the analog signal, the analog signal representing the plurality of upconverted antenna-carrier channels, the method comprising: compressing the signal samples corresponding to each baseband antenna-carrier channel, including the at least one particular baseband antenna-carrier channel, to form compressed samples in accordance with a compression control parameter wherein each compressed sample includes a compressed I sample and a compressed Q sample, wherein the compressed samples for the particular baseband antenna-carrier channel represent the composite of signals to be transmitted to the multiple wireless subscribers; formatting the compressed samples for transfer over the serial data link; transferring the compressed samples over the serial data link to the RF unit; receiving the compressed samples at the RF unit; and decompressing the compressed samples in accordance with a decompression control parameter to form decompressed signal samples corresponding to each baseband antenna-carrier channel, wherein each decompressed sample includes a decompressed I sample and a decompressed Q sample, wherein the decompressed signal samples for the at least one particular baseband antenna-carrier channel reconstruct the composite of signals to be transmitted to the multiple wireless subscribers, and wherein the decompressed signal samples are provided to the DUC for forming the upconverted digital signal.