Radio transmission control method, radio receiver apparatus, and radio transmitter apparatus
First Claim
1. A radio communication method by a radio communication system in which output signals are generated from a plurality of information signals and then transmitted respectively at a plurality of different frequencies to a system of a communication partner from N antennas, the method comprising:
- receiving control information by a control signal which is transmitted by the system of the communication partner; and
transmitting transmission signals respectively at the plurality of frequencies from the N antennas based on the received control information, the transmission signals each being generated based on a first operation result, which is obtained by multiplying a first information signal by a first N-dimensional weight vector, and a second operation result, which is obtained by multiplying a second information signal by a second N-dimensional weight vector, whereinthe control information includes weight-related information including a set of the first N-dimensional weight vector and the second N-dimensional weight vector,the first information signal and the second information signal include one of a set of signals modulated by different modulation schemes and a set of signals encoded by different encoding methods, andthe weight-related information is common to all of the plurality of frequencies used for signal transmission from the radio communication system to the system of the communication partner.
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Abstract
A radio communication method and apparatus generate a plurality of information signals and transmit the signals to a communication partner from a plurality of antennas. A plurality of combination of signals to be transmitted are selected. A transmission evaluation value is determined based on the signal noise ratio of each signal. After all combinations are evaluated, a transmission format suitable for sending a combination of signals is determined based on a highest evaluation value.
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Citations
2 Claims
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1. A radio communication method by a radio communication system in which output signals are generated from a plurality of information signals and then transmitted respectively at a plurality of different frequencies to a system of a communication partner from N antennas, the method comprising:
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receiving control information by a control signal which is transmitted by the system of the communication partner; and transmitting transmission signals respectively at the plurality of frequencies from the N antennas based on the received control information, the transmission signals each being generated based on a first operation result, which is obtained by multiplying a first information signal by a first N-dimensional weight vector, and a second operation result, which is obtained by multiplying a second information signal by a second N-dimensional weight vector, wherein the control information includes weight-related information including a set of the first N-dimensional weight vector and the second N-dimensional weight vector, the first information signal and the second information signal include one of a set of signals modulated by different modulation schemes and a set of signals encoded by different encoding methods, and the weight-related information is common to all of the plurality of frequencies used for signal transmission from the radio communication system to the system of the communication partner.
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2. A radio communication system in which output signals are generated from a plurality of information signals and then transmitted respectively at a plurality of different frequencies to a system of a communication partner from N antennas, comprising:
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reception means for receiving control information by a control signal which is transmitted by the system of the communication partner; and transmission means for transmitting transmission signals respectively at the plurality of frequencies from the N antennas based on the received control information, the transmission signals each being generated based on a first operation result, which is obtained by multiplying a first information signal by a first N-dimensional weight vector, and a second operation result, which is obtained by multiplying a second information signal by a second N-dimensional weight vector, wherein the control information includes weight-related information including a set of the first N-dimensional weight vector and the second N-dimensional weight vector, the first information signal and the second information signal include one of a set of signals modulated by different modulation schemes and a set of signals encoded by different encoding methods, and the weight-related information is common to all of the plurality of frequencies used for signal transmission from the radio communication system to the system of the communication partner.
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Specification