Patent ID: 8989088
Filing Date: 2015-03-24
Classification: H03M,H04L,H04W

Abstract:
1. In a base transceiver system of a wireless communication network, a method for transferring OFDM modulated signal data from a radio frequency (RF) unit to a baseband unit over a serial data link, wherein the RF unit is connected to an antenna to receive an analog signal, the analog signal representing a plurality of antenna-carrier channels, the RF unit including an analog to digital converter (ADC) that converts the analog signal to a digital signal and a digital down converter (DDC) that downconverts the digital signal to a plurality of baseband channels, each baseband channel corresponding to one of the antenna-carrier channels and having a sequence of signal samples, wherein each signal sample includes an in-phase (I) sample and a quadrature (Q) sample, wherein a baseband processor of the baseband unit performs signal processing operations, the method comprising: compressing the sequence of signal samples of each baseband channel at the RF unit, wherein for each baseband channel the compressing comprises: formatting the compressed coefficients of the plurality of baseband channels for transfer over the serial data link; transferring the compressed coefficients over the serial data link from the RF unit to the baseband unit; receiving the compressed coefficients at the baseband unit; and decompressing the compressed coefficients at the baseband unit, wherein for each baseband channel the decompressing comprises: providing the decompressed coefficients to the baseband processor of the baseband unit to apply the signal processing operations to the decompressed coefficients.