Patent ID: 7643569
Filing Date: 2010-01-05
Classification: H04L

Abstract:
1. A method comprising: receiving an encoded signal over a multi-input multi-output (MIMO) communication channel having Intersymbol Interference (ISI) channel characteristics; transforming the ISI channel characteristics to selective block fading characteristics; deinterleaving the encoded signal according to a mapping function that is based on the number of fading blocks associated with the communication channel and on code word length, wherein the mapping function is defined as wherein L ISI represents the number of fading blocks, ( ) m refers to the modulo m operation, 0≦i≦N−1, and N is the length of the code word, N being a multiple of L ISI ; decoding the encoded signal to output a space-frequency code having an algebraic construction based on the selective block fading characteristics; producing a baseband signal from the encoded signal; and applying a Fast Fourier Transform (FFT) to the baseband signal.