CHANNEL SOUNDING FOR IMPROVED SYSTEM PERFORMANCE

摘要

PURPOSE: A channel sounding for improving a system performance is provided to improve the total performance of an OFDM-MIMO system by effectively estimating the current channel condition. CONSTITUTION: A channel sounding processor (201) evaluates the channel condition of a communications link between a transmitter and a receiver. An MAC layer processor (203) establishes the data transmission parameter. A physical layer processor (205) diffuses data bit among subcarrier intervals and transmission antennas (2071-207n). A transport format control processor (206) processes information from the MAC layer processor and physical layer processor. A memory element (210) maintains the history of the channel condition and the determined transmission parameter. [Reference numerals] (201) Channel sounding processor on a transmitting side; (202) Transmitter; (203) MAC layer processor; (204) Receiver; (205) PHY layer processor; (206) TFC processor on a transmitting side; (208) Signal monitoring processor on a transmitting side; (211) Channel sounding processor on a receiving side; (213) TFC processor on a receiving side; (215) Data packet processor; (217) Signal monitoring processor on a receiving side; (219) Receiving memory; (221) Adjusting processor; (AA) Data of the receiver; (BB) MIMO antenna interface; (CC) Wireless interface; (DD) MIMO antenna interface