Patent ID: 7889805
Filing Date: 2011-02-15
Classification: H04B,H04L

Abstract:
1. A mobile station transmitter and receiver of a smart antenna system for forming uplink eigenbeams of the OFDM/TDD (orthogonal frequency division multiplex/time division duplex), comprising: multiple antennas for transmitting OFDM symbols to a base station receiver, and receiving OFDM symbols from a base station transmitter; a mobile station receiver for performing FFT (fast Fourier transform) on a predetermined number of OFDM symbols which are received through a corresponding number of the multiple antennas, outputting FFT-performed symbols as a corresponding number of sets of parallel signals, estimating channels from the sets of parallel signals, detecting signals from the sets of parallel signals using channel estimation results, converting the detected signals into serial signals, and outputting decoded serial signals; and a mobile station transmitter for converting channel-coded symbols which are input in series into a plurality of parallel signals, generating beam weights from channel matrices of respective pilot tones of each subcarrier according to the channel estimation results of the mobile station receiver, generating OFDM symbols with formed eigenbeams in accordance with the plurality of parallel signals and the beam weights, and outputting the OFDM symbols with formed eigenbeams, wherein the mobile station transmitter comprises a beam weight generator for generating the beam weights from the channel matrices of the respective pilot tones of each subcarrier according to the channel estimation results; wherein the beam weight generator comprises: