BỨC XẠ TẠI BS VÀ MS VỚI CÁC NGÓN TAY RAKE SỬ DỤNG HỆ THỐNG MIMO VÀ KỸ THUẬT KHÔNG GIAN - THỜI GIAN

THE BEAMFORMING AT BS AND MS WITH RAKE FINGERS USING MIMO SYSTEM AND SPACE-TIME TECHNIQUE

Abstract

The Rake receiver performs a multi-path signal gathering function and combines them into a signal of good strength. However, in order to serve the large capacity needs of users, Multiple Input - Multiple Output (MIMO) multi-antenna system incorporates the space-time coding technique used in combination with the Rake receiver. In a cellular network, the Mobile Station (MS) may have to receive multiple signals from different Base Stations (BSs) of which one base station desired and the rest are the affecting stations. The problem posed when using MIMO in combination with the Rake receiver, we need to make sure that the beam generated at the receiver will have the receiving direction related to the affecting base stations will have a gain of nearly zero. The paper concentrates on build these types of beam, and also proves the Signal to Interference and Noise Ratio (SINR) to be higher than the traditional case without using anti-inteference radiation from other BS stations.