Patent ID: 7720172
Filing Date: 2010-05-18
Classification: H04K,H04L

Abstract:
1. A transmitting apparatus for transmitting data to a radio station, the apparatus comprising: an array antenna including M, pieces of antenna elements for receiving a carrier modulation signal of a known symbol that is transmitting from a radio station and for transmitting a signal to the radio station, where M is an integer of 2 or more; a frequency conversion means for converting the carrier modulation signal into a baseband signal; a reference symbol generation means for generating a reference symbol that gives a phase reference and is the same symbol with the known symbol; a propagation channel estimation means for generating receiving symbols from the baseband signal based on the reference symbol, wherein the receiving symbols are estimate values for a complex propagation channel between a transmitting antenna of the radio station and the array antenna; a transmitting symbol calculation means for calculating plural sets of transmitting symbol vectors from the receiving symbols so that each transmitting symbol vector is configured by plural sets of transmitting symbols and then generating a reference table configured by the plural sets of transmitting symbol vectors; a symbol mapping means for generating transmitting symbols by selecting one set of the transmitting symbol vector from the reference table based on transmitting data; a carrier modulation means for generating baseband signals from the transmitting symbols; a transmitting means for converting baseband signals to radio frequency signals to transmit the radio frequency signals to the radio station through the array antenna; and a carrier separation means for separating the baseband signal received at the M pieces of antenna elements into N pieces of sub-carriers, where N is an integer of 2 or more, wherein the carrier modulation signal is configured by multiple carriers, and said carrier separation means, after separating the received baseband signal into N pieces of sub-carriers, generates “M×N” pieces of receiving symbols that are estimate values of a complex propagation channel based on the reference symbol, where N is an integer of 2 or more.