Patent ID: 7519022
Filing Date: 2009-04-14
Classification: H04B,H04L

Abstract:
1. A spatial multiplexing detection system using a MIMO (Multi Input Multi Output) technology for allowing a terminal group which is generated by combining terminals concurrently accessible to a base station with multiple antennas therein, for transmitting transmit data to the base station, comprising: a MIMO detector for detecting receive symbols which correspond to symbols transmitted through transmit antennas from receive signals when the transmit data transmitted by the terminal group are received through receive antennas, wherein the terminal group includes first and second terminals, wherein the second terminal is accessed by the base station when the base station communicates with the first terminal and said MIMO detector includes a channel estimator for the second terminal and identifies the group allocations of all terminals; a channel capacity calculator for calculating a channel capacity for a respective group allocation identified by the MIMO detector; a selector for selecting a group allocation having a maximum channel capacity from among the channel capacities calculated by the channel capacity calculator; a terminal identifier for identifying the receive symbols detected by the MIMO detector as symbols which correspond to respective terminals in the terminal group; a symbol demapper for demapping the receive symbols identified by the terminal identifier to binary data which correspond to a modulation method used by the terminal group; and a reverse data processor for performing deinterleaving, decoding of error correction codes, and descrambling on the binary data demapped by the symbol demapper, and detecting receive data of the respective terminals.