MULTI-ANTENNA RELAY WITH SELF-INTERFERENCE CANCELLATION
First Claim
1. A wireless relay node comprising:
- a receiving side and a transmitting side for concurrent reception and transmission of an information stream, at least one of said receiving side and said transmitting side having multiple antennas;
means for cancelling signal feedback from a multi-antenna dependent feedback channel from said transmitting side to said receiving side based on a N×
M dimensional filter matrix dependent on said multi-antenna dependent feedback channel, where at least one of N and M is greater than 1.
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Accused Products
Abstract
A wireless relay node (100) comprises a receiving side (110) and a transmitting side (120) adapted for concurrent reception and transmission of an information stream, and at least one of the two sides has multiple antennas for multi-antenna operation. In the internal design, the wireless relay node is further configured (130) for cancelling signal feedback from a multi-antenna dependent feedback channel from the transmitting side to the receiving side based on an N×M dimensional filter matrix (135) dependent on the multi-antenna dependent feedback channel, where at least one of N and M is greater than 1. In this way, self-interference cancellation of a multi-antenna dependent feedback signal from the output to the input of the wireless relay node is effectively obtained.
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Citations
22 Claims
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1. A wireless relay node comprising:
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a receiving side and a transmitting side for concurrent reception and transmission of an information stream, at least one of said receiving side and said transmitting side having multiple antennas; means for cancelling signal feedback from a multi-antenna dependent feedback channel from said transmitting side to said receiving side based on a N×
M dimensional filter matrix dependent on said multi-antenna dependent feedback channel, where at least one of N and M is greater than 1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18)
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16. A wireless relay node comprising:
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a receiving side and a transmitting side for concurrent reception and transmission of an information stream, said receiving side and said transmitting side having multiple antennas; means for receiving a Multiple Input Multiple Output;
MIMO signal representative of said information stream at said receiving side with a dimensionality greater than 1;means for processing said MIMO signal such that the dimensionality of the processed signal for transmission at the transmitting side is at least greater than 1.
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17. A wireless relay node comprising:
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a receiving side and a transmitting side for concurrent reception and transmission of an information stream, said receiving side and said transmitting side having multiple antennas; means for receiving a Multiple Input Multiple Output;
MIMO signal representative of said information stream at said receiving side, said received MIMO signal having multiple MIMO sub-streams;means for processing said received MIMO signal such that the number of MIMO sub-streams of the processed signal for transmission at the transmitting side is at least greater than 1.
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19. A method of determining a self-interference cancellation filter for a wireless relay node having a receiving side and a transmitting side for concurrent reception and transmission of an information stream, wherein said method comprises the steps of:
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determining a channel matrix of a multi-antenna dependent feedback channel from said transmitting side to said receiving side, at least one of said receiving side and said transmitting side having multiple antennas; and determining said self-interference cancellation filter as a N×
M dimensional filter matrix in dependence on said feedback channel matrix, where at least one of N and M is greater than 1. - View Dependent Claims (20)
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21. A self-interference cancellation filter for a wireless relay node, said relay node having a receiving side and a transmitting side for concurrent reception and transmission of an information stream, wherein said filter is based on a N×
- M dimensional filter matrix that is dependent on a multi-antenna dependent feedback channel from said transmitting side to said receiving side of said relay node, where at least one of N and M is greater than 1.
- View Dependent Claims (22)
Specification