APPARATUS FOR REMOVING INTERFERENCE BETWEEN NEIGHBOR CELLS IN A RADIO COMMUNICATION SYSTEM, AND METHOD FOR SAME
First Claim
1. An apparatus for cancelling interference between neighboring cells, comprising:
- a receiving unit for receiving reception power information and Signal-to-Noise power Ratio (SNR) information of a neighboring cell base station from multiple receiving antennas;
a first determination unit for determining a number of dominant neighboring cell interference signals using the received reception power information and SNR information;
a second determination unit for fixing a candidate signal vector of a target signal depending on the determined number of dominant neighboring cell interference signals, the received SNR information, and a number of the multiple receiving antennas;
a third determination unit for fixing a candidate signal matrix of the dominant neighboring cell interference signals based on the fixed candidate signal vector of the target signal; and
an estimation unit for estimating signals transmitted from a target base station or the neighboring cell base station by applying the fixed candidate signal matrix of the dominant neighboring cell interference signals to a Maximum Likelihood (ML) technique.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to an apparatus for removing interference between neighbor cells in a radio communication system, and to a method for same. The apparatus according to the present invention includes a receiving unit which receives receiving power information and signal-to-noise ratio information of a neighbor cell base station from multiple receiving antennas, a first determination unit for determining the number of major neighbor cell interference signals by using the received receiving power information and the signal-to-noise ratio information, a second determination unit for determining a candidate signal vector of a target signal in accordance with the determined number of major neighbor cell interference signals, the received signal-to-noise ratio, and the number of the multiple receiving antennas, a third determination unit for determining a candidate signal matrix of the major neighbor cell interference signals on the basis of the determined candidate signal vector of the target signal, and an estimation unit for estimating signals transmitted from the target base station or the neighbor base station by applying the determined candidate signal matrix of the major neighbor cell interference signals to the method of maximum likelihood. Whereby, the present invention removes interference between neighbor cells in an efficient manner, maintains the performance thereof, and reduces complexity at the receiving end.
17 Citations
18 Claims
-
1. An apparatus for cancelling interference between neighboring cells, comprising:
-
a receiving unit for receiving reception power information and Signal-to-Noise power Ratio (SNR) information of a neighboring cell base station from multiple receiving antennas; a first determination unit for determining a number of dominant neighboring cell interference signals using the received reception power information and SNR information; a second determination unit for fixing a candidate signal vector of a target signal depending on the determined number of dominant neighboring cell interference signals, the received SNR information, and a number of the multiple receiving antennas; a third determination unit for fixing a candidate signal matrix of the dominant neighboring cell interference signals based on the fixed candidate signal vector of the target signal; and an estimation unit for estimating signals transmitted from a target base station or the neighboring cell base station by applying the fixed candidate signal matrix of the dominant neighboring cell interference signals to a Maximum Likelihood (ML) technique. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 16)
-
-
10. A method of cancelling interference between neighboring cells, comprising:
-
receiving reception power information and Signal-to-Noise power Ratio (SNR) information of a neighboring cell base station from multiple receiving antennas; determining a number of dominant neighboring cell interference signals using the received reception power information and SNR information; fixing a candidate signal vector of a target signal depending on the determined number of dominant neighboring cell interference signals, the received SNR information, and a number of the multiple receiving antennas; fixing a candidate signal matrix of the dominant neighboring cell interference signals based on the fixed candidate signal vector of the target signal; and estimating signals transmitted from a target base station or the neighboring cell base station by applying the fixed candidate signal matrix of the dominant neighboring cell interference signals to a Maximum Likelihood (ML) technique. - View Dependent Claims (11, 12, 13, 14, 15, 17, 18)
-
Specification