DATA TRANSMISSION METHOD AND APPARATUS BASED ON JOINT SPACE DIVISION MULTIPLE ACCESS TECHNOLOGY IN COLLABORATIVE DOWNLINK MIMO SYSTEM

摘要

PURPOSE: A device and a method for transceiving data for cooperative partition multi access technology between base stations to transmit downlink data in a cooperative wireless communication network using a MIMO(Multi Input Multi Output) antenna system are provided to maximize the transmission capacity of data simultaneously transmitted from collaborative-base transceiver stations to collaborative-access terminals through feedback information of limited quantity. CONSTITUTION: A downlink channel estimator determines a collaborative BTS set CBTS(21). The downlink channel estimator estimates the maximum singular vector by a C-BTS(22). An optimal vector selector selects a vector copying the maximum vector by a C-BTS(23). The optimal vector selector selects quantized size and phase for optimally coupling copied vectors(24-1,24-2). A CQI(Channel Quality Indicator) estimator estimates a receivable SINR(Signal-to-Interference plus Noise Ratio)(25).