OFDM-BASED METHOD AND SYSTEM FOR TRANSMITTING DATA

摘要

Disclosed is an OFDM-based method for transmitting data, for use in a short-to-mid range wireless communication system uplink data transmission. An available frequency band of the system is equally divided into N number of basic frequency sub-bands. The method comprises: an transmitting station using a single frequency sub-band or a combination of M number of frequency sub-bands to transmit data to a receiving station, where M = 2n; the transmitting station using fs or M*fs as the baseband sample sampling rate; the receiving station receiving within the available frequency band the data transmitted by the one or multiple transmitting stations; and the receiving station using N*fs as the baseband sample sampling rate. Also provided in the present invention is an OFDM-based system for transmitting data. In the present invention, the OFDM-based technology and employment of the combination of frequency sub-bands allow for the transmitting station and the receiving station in a wireless communication system to have different bandwidth configurations, thus allowing for employment of a lower configuration by the transmitting station to reduce hardware costs, and for employment of a higher configuration by the receiving station to improve efficiencies such as frequency spectrum utilization rate and throughput, also allowing for multiple user stations to communicate simultaneously with an access point.