The present invention relates to a header structure for a TDD system which uses preferably an OFDM transmission system. Thereby a header slot according to the present invention fits entirely into one time slot of the GSM TDD structure. The header slot HS comprises a downlink channel DC and an uplink...http://www.google.com/patents/US6567383?utm_source=gb-gplus-sharePatent US6567383 - Header structure for TDD systems
