Patent Number: 8,577,284

Title: Cooperative reception diversity apparatus and method based on signal point rearrangement or superposition modulation in relay system

Abstract: A method and apparatus for method for providing cooperative reception diversity based on signal point rearrangement and superposition modulation performed at a relay station is discussed. A first technique performs superposition modulation at a relay station and a second technique employs signal point rearrangement at a relay station. The superposition modulation is a different type of superposition modulation than that employed by the transmitter of the signal. Similarly, the signal point rearrangement is a different type of signal point rearrangement than that employed by the transmitter of the signal. As a result of the superposition modulation or signal point rearrangement performed by the relay station, the reliability of a signal received by a reception unit at the destination receiver is improved.

Inventors: Seo; Bangwon (Daejeon, KR), Lee; Heesoo (Daejeon, KR), Ahn; Jae Young (Daejeon, KR), Kang; Chung Gu (Daejeon, KR), Ryu; Hyun Seok (Daejeon, KR), Park; Sun Mi (Daejeon, KR)

Assignee: Electronics and Telecommunications Research Institute

International Classification: H04B 7/15 (20060101); H04B 7/14 (20060101); H04B 3/36 (20060101)

Expiration Date: 1/05/12017