| Patent application number | Description | Published |
|---|
| 20080212515 | SYSTEM AND METHOD FOR TRANSMITTING AND RECEIVING SIGNALS IN A COMMUNICATION SYSTEM USING RELAY SCHEME - A system and method for transmitting and receiving a signal in a communication system using a relay scheme. A base station receives a first signal in a first time interval from a first mobile station which is at least one mobile station located in a third region which is a region where a first region which is a region of the base station itself overlaps with a second region which is a region of a relay station. The relay station receives a second signal in the first time interval from a second mobile station which is at least one mobile station located in a fourth region which is a region not overlapping with the first region in the second region, and receives the first signal from the first mobile station. The relay station transmits a third signal including the first signal and the second signal to the base station in a second time interval. The base station receives the third signal in the second time interval, and cancels the first signal from the third signal to detect the second signal. | 09-04-2008 |
| 20080212530 | APPARATUS AND METHOD FOR FREQUENCY REUSE IN A MULTI INPUT MULTI OUTPUT SYSTEM - A frequency reuse apparatus and method for a Mobile Station (MS) using a multiple-antenna in a broadband wireless access communication system are provided. The method includes dividing a first frequency band into ‘N’ second frequency bands where ‘N’ equals a number of Base Stations (BSs); dividing each second frequency band into ‘n’ third frequency bands; allocating each of the ‘N’ second frequency bands according to the number of receive antennas; and allocating the third frequency bands to all of the BSs, respectively. | 09-04-2008 |
| 20080232343 | Apparatus and method for estimating uplink frequency offset in wireless communication system - Provided is an apparatus and method for estimating an uplink frequency offset in a wireless communication system. In a receiving apparatus of a wireless communication system using a random access channel composed of two equivalent sequences, the apparatus includes a channel receiver which extracts samples corresponding to the two sequences from an input random access channel signal; a correlator which computes first and second correlation values by correlating preceding and trailing samples among the samples output from the channel receiver with a predetermined sequence; and a frequency offset estimator which estimates a frequency offset by using a ratio of the second correlation value to the first correlation value output from the correlator. | 09-25-2008 |
| 20080234003 | APPARATUS AND METHOD FOR CANCELLING FREQUENCY OFFSET INTERFERENCE IN A BROADBAND WIRELESS COMMUNICATION SYSTEM - An apparatus and method for detecting a signal in a broadband wireless communication system are provided. In a Base Station, an offset estimator estimates frequency offsets of a signal received from each of a plurality of Mobile Stations (MSs), a channel estimator estimates a channel matrix having channel coefficients of subcarriers as elements, for each MS, a modeler models the received signals using the frequency offsets of the MSs and the channel matrices of the MSs, and a detector detects signals transmitted from the MSs using the modeled received signals. | 09-25-2008 |
| 20080248773 | APPARATUS AND METHOD FOR INTERFERENCE CANCELLATION IN multiple-antenna COMMUNICATION SYSTEM - An apparatus and method for interference cancellation in multiple-antenna communication system is disclosed. Accordingly, a receiver of a multiple-antenna communication system cancels interference by selecting either a multiple-symbol processing scheme or a single-symbol processing scheme depending on a signal type, thereby improving performance of the communication system. | 10-09-2008 |
