Patent ID: 8050343

Claim:
A method, in a wireless communication system receiver, of receiving and processing a signal comprising at least two component carriers carrying data scheduled to the receiver and having center frequencies spaced apart by at least one component carrier frequency difference, wherein each component carrier comprises a number of subcarriers spaced apart by a system subcarrier frequency spacing, the method comprising: obtaining a common divisor for the at least one component carrier frequency difference and the system subcarrier frequency spacing, receiving a symbol on the subcarriers of the component carriers and downconverting it to baseband, to produce a baseband symbol, inserting a block of padding values in the baseband symbol to produce a padded symbol, wherein the length of the block is such that intermediate subcarriers are added to yield a subcarrier frequency spacing for the padded symbol equal to the common divisor, and Fast Fourier Transform (FFT) processing the padded symbol.