Method and a system implementing a turbo-diversity scheme for wireless OFDM systems

摘要

The method comprising passing, a base station or a user terminal, information comprising data signals and encoding, a first and a second turbo encoders, said received data signals, generating two different turbo code blocks comprising a set of systematic and parity bits. Where, in order to enhance detection the two different turbo code blocks are simultaneously transmitted through a wireless OFDM system and wherein the data signals to be encoded by said second turbo encoder are interleaved prior encoding by an external bit interleaver.;The system of the invention is arranged to implement the method of the invention.

主权项

1. A method for implementing a turbo-diversity scheme in a wireless orthogonal frequency division multiplex (OFDM) system, the method comprising:
encoding, at a first turbo encoder and a second turbo encoder, information comprising data signals, and generating two different turbo code blocks each comprising a set of systematic and parity bits;
interleaving, by an external bit interleaver, the data signals to be encoded by said second turbo encoder;de-interleaving said systematic bits after the second turbo encoder, and applying an Alamouti-based space-frequency block coding (SFBC) over said de-interleaved systematic bits after the second turbo encoder and said systematic bits after the first turbo encoder; andsimultaneously transmitting each of said two different turbo code blocks over different transmit antennas through said wireless OFDM system.