Patent ID: 9112544
Filing Date: 2015-08-18
Classification: H04B,H04L

Abstract:
1. A method of processing data flows, the method comprising; receiving a data flow which includes N data samples of a first antenna carrier having a higher sampling rate and n data samples, where n is less than N, of a second antenna carrier having a lower sampling rate than that of the first antenna carrier; padding the n data samples with z zeros, where z=N−n, to produce N padded samples; performing, at an inverse Fourier transform module, a first inverse Fourier transform operation on said N data samples to produce N inverse Fourier transformed samples; performing a second inverse Fourier transform operation on said N padded samples to produce N inverse transformed padded samples; transferring the N inverse Fourier transformed samples and the N inverse transformed padded samples from a memory onto a communications link for onward transmission by performing a first single bandwidth DMA (direct memory access) operation; wherein the communications link has a frame structure and wherein the N inverse Fourier transformed samples are contained within a first AxC container and the N inverse Fourier transformed padded samples are contained within a second AxC container and comprise the n data samples interleaved with z interpolated samples.