MIMO communications
First Claim
1. A wireless communication system comprising:
- a) M antennas;
b) transmit and control circuitry operatively coupled to the M antennas and adapted to;
i) select N antennas from the M antennas based on control information;
ii) create N data streams from information to be transmitted to a receiver;
iii) transmit the N data streams to the receiver via the N antennas;
iv) select a redundant antenna other than the N antennas from the M antennas;
v) apply a weighting factor to one of the N data streams to create a weighted data stream; and
vi) transmit the weighted data stream to the receiver via the redundant antenna concurrently with the N data streams, wherein transmission of the weighted data stream reinforces the one of the N data streams during transmission.
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0 Petitions
Accused Products
Abstract
The present invention allows a wireless communication system, such as a base station, to select N antennas from an associated group of M antennas for transmitting multiple streams of data to a given user. Based on the channel conditions between the M antennas of the wireless communication system and the multiple antennas at the receiver, the N antennas to use for transmission are selected to enhance channel capacity, signal-to-noise ratios, or a combination thereof. The channel conditions are measured at the receiver, and may be sent back to the wireless communication system for processing or may be processed at the receiver, wherein instructions are transmitted back to the wireless communication system to control antenna selection.
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Citations
36 Claims
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1. A wireless communication system comprising:
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a) M antennas; b) transmit and control circuitry operatively coupled to the M antennas and adapted to; i) select N antennas from the M antennas based on control information; ii) create N data streams from information to be transmitted to a receiver; iii) transmit the N data streams to the receiver via the N antennas; iv) select a redundant antenna other than the N antennas from the M antennas; v) apply a weighting factor to one of the N data streams to create a weighted data stream; and vi) transmit the weighted data stream to the receiver via the redundant antenna concurrently with the N data streams, wherein transmission of the weighted data stream reinforces the one of the N data streams during transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method providing wireless communications via a wireless communication system comprising having M antennas, the method comprising:
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a) selecting N antennas from the M antennas based on control information; b) creating N data streams from information to be transmitted to a receiver; c) transmitting the N data streams to the receiver via the N antennas; d) selecting a redundant antenna other than the N antennas from the M antennas; e) applying a weighting factor to one of the N data streams to create a weighted data stream; and f) transmitting the weighted data stream to the receiver via the redundant antenna concurrently with the N data streams, wherein transmission of the weighted data stream reinforces the one of the N data streams during transmission. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A wireless communication system comprising:
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a) M antennas; and b) transmit and control circuitry operatively coupled the M antennas and adapted to; i) select N antennas from the M antennas based on control information; ii) generate a plurality of data streams to be transmitted to a receiver; iii) provide an inverse Fourier transform on the data streams to provide a plurality of orthogonal frequency division multiplex sub-carriers, such that the sub-carriers are allocated to the select N antennas based on the control information; iv) transmit the sub-carriers via the N antennas to the receiver; v) select a redundant antenna other than the N antennas from the M antennas; vi) applying a weighing factor to at least one of the sub-carriers for the plurality of data streams to create at least one weighted sub-carrier; and vii) transmit the weighted sub-carriers to the receiver via the redundant antenna concurrently with the sub-carriers, wherein transmission of the weighted sub-carriers reinforces the sub-carriers during transmission. - View Dependent Claims (28, 29, 30, 31)
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32. A method providing wireless communications via a wireless communication system comprising having M antennas, the method comprising:
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a) selecting N antennas from the M antennas based on control information; b) generating a plurality of data streams to be transmitted to a receiver; c) providing an inverse Fourier transform on the data streams to provide a plurality of orthogonal frequency division multiplex sub-carriers, such that the sub-carriers are allocated to the select N antennas based on the control information; d) transmitting the sub-carriers via the N antennas to the receiver; e) selecting a redundant antenna other than the N antennas from the M antennas; f) applying a weighting factor to at least one of the sub-carriers for the plurality of data streams to create at least one weighted sub-carrier; and g) transmitting the weighted sub-carriers to the receiver via the redundant antenna concurrently with the sub-carriers, wherein transmission of the weighted sub-carriers reinforces the sub-carriers during transmission. - View Dependent Claims (33, 34, 35, 36)
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Specification