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AssigneeNippon Telegraph and Telephone Corporation
InventorsRiichi Kudo, Yusuke Asai, Tomoki Murakami, Koichi Ishihara, Masato Mizoguchi
Estimating the term…
The number of OFDM symbols for channel estimation is reduced, overhead due to a pilot signal and a feedback signal is reduced, and the throughput is improved. A wireless apparatus is provided with: an iterative coefficient setting unit which sets, for a plurality of transmission ports, an iterative coefficient representing the number of transmission ports which share a plurality of frequency channels of training signals for estimating the channel information; a training signal generating unit which allocates frequency channels to each transmission port so as to satisfy the set iterative coefficient and generates L training signals based on the allocated frequency channels; a channel information acquiring unit which acquires channel information estimated from the training signals from a communication partner for the frequency channels allocated to each transmission port; and a channel information interpolating unit which interpolates channel information of a remaining frequency channel other than the frequency channels allocated to each transmission port from the acquired channel information.
A wireless apparatus which estimates channel information between a plurality of transmission ports and receive antennas of a communication partner in communication based on an orthogonal frequency-division multiplexing scheme, the wireless apparatus comprising:
A training signal transmission method of a wireless apparatus which estimates channel information between a plurality of transmission ports and receive antennas of a communication partner in communication based on an orthogonal frequency-division multiplexing scheme, the training signal transmission method comprising:
Dependencies are inferred from the claim text.