Apparatus and method for partial interference alignment in multi-antenna communication system
AssigneeElectronics and Telecommunications Research Institute
InventorsJinhyung OH, Gwangzeen KO, Igor KIM, Myung Sun SONG
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Abstract
A method for a partial interference alignment in a multi-antenna communication system includes, checking the number of access points (APs) operating at the same channel or adjacent channel; and calculating LIPs (Leakage Interference Power) that the respective APs have an effect on each base-station (STA). Further, the method includes choosing the upper three AP-STA pairs having the highest LIP in order as a candidate group for interference alignment; and performing a partial interference alignment on the candidate group for interference alignment.
Claims11
A method for a partial interference alignment in a multi-antenna communication system, the method comprising:
- checking the number of access points (APs) operating at the same channel or adjacent channel;
- calculating LIPs (Leakage Interference Power) that the respective APs have an effect on each base-station (STA);
- choosing the upper three AP-STA pairs having the highest LIP in order as an candidate group for interference alignment;
- and
- performing a partial interference alignment on the candidate group for interference alignment.
An apparatus for a partial interference alignment in a multi-antenna communication system, the apparatus comprising:
- an AP (Access Point) detection unit configured to check the number of APs operating on the same channel or adjacent channel;
- an interference calculation unit configured to calculate LIPs (Leakage Interference Power) that the respective APs have an effect on each base-station (STA);
- and
- an interference alignment unit configured to choose the upper three AP-STA pairs having the highest LIP in order among from the LIPs calculated by the interference calculation unit as a candidate group for interference alignment, perform an interference alignment precoding on the APs that belong to the candidate group for interference alignment, and perform a precoding on the APs that do not belong to the candidate group for interference alignment so that their SLNRs (Signal Leakage Noise Ratio) are maximized.
Dependencies are inferred from the claim text.