A NOVEL DECENTRALIZED MIMO-OFDM UPLINK DETECTION SCHEME

摘要

Decentralized interference cancellation in MIMO-OFDM (orthogonal frequency division multiplexing) systems can be considered as a promising approach in next generation wireless systems. Considering the entirety of the antennas of all mobile terminals at one end and the antennas of the access points (APs) at the other end of the communication link, state of the art interference cancellation is based on a central signal processing unit, e.g. a central unit (CU), where joint detection can be applied in the uplink (UL) and joint transmission in the downlink (DL), respectively. Unfortunately such setups require cost-intensive optical fibers or point-to-point radio links in order to deliver all the required information to the CU. Therefore decentralized, cost-efficient solutions, which by-pass the CU, are of common interest. In this contribution a novel decentralized uplink detection scheme for MIMOOFDM systems is presented and evaluated under real channel conditions.