Electronics and Telecommunications Research Institute

Samsung Electronics Co., Ltd.

Eon Young Hong

Youn Ok Park

Jun-Woo Kim

Kyung Yeol Sohn

Hyeong Sook Park

Jae Kwon Kim

Youn-Ok Park

Hoon Do Heo

Dae Ho Kim

Seung Jae Bahng

Young Jo Bang

Chang Wahn Yu

Jung Pil Choi

Jun Woo Kim

Hyun Myung Wu

Provided are a method and an apparatus for transmitting resource allocation information. In the case when a wireless resource for a new terminal is fixedly allocated to a fixed allocation zone, the apparatus for transmitting resource allocation information determines a resource allocation method of allocating the wireless resource and determines an allocation form of a resource that is allocated by a resource allocation method to select any one information displaying method of a plurality of information displaying methods of displaying allocation information on the allocated resource on the basis of the determined resource allocation method and resource allocation form. Next, the resource allocation information is generated and transmitted on the basis of the selected displaying method.

Method and apparatus for transmitting resource allocation information

A data processing method, an equalizer, and a receiver in a wireless communication system including a relay station are provided. The data processing method includes: receiving a base station signal from a base station; receiving a relay station signal from a relay station; determining a propagation delay between the base station signal and the relay station signal; generating an equalizing signal in which interference generated between the base station signal and the relay station signal is alleviated in consideration of the propagation delay; and recovering information bits transmitted by the base station from the equalizing signal. According to an exemplary embodiment of the present invention, it is possible to alleviate performance deterioration due to an interference problem generated in a relay system.

Data processing method, equalizer and receiver

Provided are a transmitting apparatus and voice data transmitting and receiving methods for providing VoIP services. When a call is started and an analog signal including a voice signal is input, the transmitting apparatus divides the analog signal into a plurality of voice data packets for transmission. Here, the plurality of voice data packets are generated by sampling with different phases in the same frequency. In addition, the transmitting apparatus inserts a time indication bit that is changed every transmission period into each of the voice data packets and transmits the voice data packets, and distinguishes voice data corresponding to a current transmission period based on the time indication bit.

Transmitter and method for transmitting and receiving of voice data for VoIP service

The present invention relates an apparatus and method of estimating a signal-to-noise ratio (SNR) of a received signal when the received signal has a timing offset. An apparatus for estimating a signal-to-noise ratio (SNR) according to an exemplary embodiment of the present invention includes a fast Fourier transform (FFT) unit that performs a fast Fourier transform on a received signal to convert the received signal into a frequency domain signal; a preamble selector that extracts a preamble from the frequency domain signal; a correlator that correlates the preamble to a preamble reference signal generated by a receiver to calculate a correlation value; an entire power estimator that calculates entire power; a noise power estimator that applies a differential demodulation method to the correlation value to remove a timing offset and calculate noise power; and an estimating unit that uses the entire power and the noise power to estimate the signal-to-noise ratio (SNR).

Apparatus and method of estimating signal-to-noise ratio

The present invention relates to a method of calculating a log-likelihood ratio and a method of detecting a transmission signal. According to the present invention, when a transmission symbol candidate vector is detected on the basis of a received signal, a threshold value and an ML metric of each transmission symbol candidate vector are calculated and the ML metric that is larger than the threshold value is updated by the threshold value. Further, a log-likelihood ratio of the transmission signal bit is calculated using the updated ML metric and the threshold value, and a transmission signal is detected using the log-likelihood ratio.

Method of calculating log-likelihood ratio and method of detecting transmission signal

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Daejeon, South Korea

Eon Young Hong