Wireless Transmission/Reception Apparatus and Wireless Transmission/Reception Method
First Claim
1. A wireless transmission/reception apparatus having a plurality of antennas, performing antenna diversity for transmission and reception, and transmitting and receiving radio signal of a frame structure containing a plurality of symbol sequences in a frequency axis direction and a time axis direction by using a time division duplex scheme and a multicarrier scheme, comprising:
- a reception weight calculation unit for calculating a weight based on a first known signal contained in the symbol sequences in the frequency axis direction among received signals obtained from the plurality of antennas;
a received signal synthesizing unit for weighing and synthesizing the received signals based on the weight calculated by the reception weight calculation unit;
a correction amount calculation unit for calculating a correction amount of the symbol sequences at least in the time axis direction based on a second known signal contained in the symbol sequences in the time axis direction among synthesized received signals that have been synthesized by the received signal synthesizing unit; and
a transmission weighting unit for weighting, after a transmission signal to be transmitted from the plurality of antennas is corrected based on the correction amount, the transmission signal based on the weight in a transmission frame next to a reception frame where the weight and the correction amount have been calculated.
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Accused Products
Abstract
To a wireless transmission/reception apparatus that has a plurality of antennas, and performs antenna diversity for transmission and reception and transmits and receives a radio signal of a frame configuration containing a plurality of symbol sequences in the frequency axis direction and the time axis direction by using the time division duplex scheme and the multicarrier scheme, a reception weight calculation unit 5-1 for calculating weight based on a first known signal contained in symbol sequences in the frequency axis direction among received signals of the plurality of antennas, a received signal synthesizing unit 6-1 for weighting the received signal based on the calculated weight and synthesizing the signal, a correction amount calculation unit 7-1 for calculating a correction amount of the symbol sequences at least in time axis direction based on a second known signal contained in the symbol sequences in the time axis direction among the synthesized received signals that were synthesized, and a transmission weighting unit 15-1 for correcting a transmission signal to be transmitted from the plurality of antennas and weighting the signal based on the weight in a transmission frame next to the reception frame where the weight and the correction amount have been calculated are provided.
12 Citations
5 Claims
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1. A wireless transmission/reception apparatus having a plurality of antennas, performing antenna diversity for transmission and reception, and transmitting and receiving radio signal of a frame structure containing a plurality of symbol sequences in a frequency axis direction and a time axis direction by using a time division duplex scheme and a multicarrier scheme, comprising:
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a reception weight calculation unit for calculating a weight based on a first known signal contained in the symbol sequences in the frequency axis direction among received signals obtained from the plurality of antennas; a received signal synthesizing unit for weighing and synthesizing the received signals based on the weight calculated by the reception weight calculation unit; a correction amount calculation unit for calculating a correction amount of the symbol sequences at least in the time axis direction based on a second known signal contained in the symbol sequences in the time axis direction among synthesized received signals that have been synthesized by the received signal synthesizing unit; and a transmission weighting unit for weighting, after a transmission signal to be transmitted from the plurality of antennas is corrected based on the correction amount, the transmission signal based on the weight in a transmission frame next to a reception frame where the weight and the correction amount have been calculated. - View Dependent Claims (2, 3)
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4. A wireless transmission/reception apparatus having a plurality of antennas, performing antenna diversity for transmission and reception, and transmitting and receiving radio signal of a frame structure containing a plurality of symbol sequences in a frequency axis direction and a time axis direction by using a time division duplex scheme and a multicarrier scheme, comprising the steps of;
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calculating a weight based on a first known signal contained in the symbol sequences in the frequency axis direction among received signals obtained from the plurality of antennas; weighting and synthesizing the received signals based on the calculated weight; calculating a correction amount of the symbol sequences at least in the time axis direction based on a second known signal contained in the symbol sequences in the time axis direction among synthesized received signals that have been synthesized; and weighting, after correcting a transmission signal to be transmitted from the plurality of antennas based on the correction amount, the transmission signal based the weight in a transmission frame next to a reception frame where the weight and correction amount have been calculated. - View Dependent Claims (5)
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Specification