Samsung Electronics Co., Ltd.

Yoo-Seung Song

Ki-Hwan Hwang

Jung-Won Kim

Seung-Hwan Lee

Seung-Joo Maeng

Jae-Ho Jeon

Jae-Hyok Lee

Hee-Kwang Lee

Chang-Soo Park

Disclosed is a method and system for allocating resources in a communication system. The method includes calculating a size of a transmission area for transmitting the generated data when data to be transmitted to mobile stations is generated; and controlling data to be transmitted through the transmission area and then allocating the controlled data to the transmission area according to priorities of data bursts based on sizes of the data bursts.

Method and system for allocating resources in a communication system

A method and apparatus for scheduling data in a communication system. Data is classified into at least one Quality of Service (QoS) class having a series of priorities according to QoS of the data. The classified data is scheduled according to the series of priorities of the at least one QoS class.

Apparatus and method for scheduling data in a communication system

A digital predistortion apparatus is provided for predistorting a nonlinear characteristic caused by a wideband power amplifier that amplifies a input signal. The digital predistortion apparatus includes a predistorter, connected to the power amplifier via a digital-to-analog converter (DAC) and a frequency up-converter, for receiving the input signal and compensating for the nonlinear characteristic using a look-up table that depends upon a change in output power of the power amplifier. The digital predistortion apparatus further includes look-up table (LUT) updating block for adaptively updating the look-up table by comparing a feedback signal output from the power amplifier, connected thereto via an analog-to-digital converter (ADC), with the input signal output from the predistorter.

Digital predistortion apparatus and method in power amplifier

A method and apparatus for estimating a signal delay between a transmission signal which is to be processed in a predetermined communication device of a mobile communication system, and a feedback signal. Each of the transmission and feedback signals is sampled for a predetermined length, and signal power magnitude values are computed in a sample unit and are stored in first and second memory blocks. Mean squared error (MSE) values are computed from a plurality of samples, while a start sample position of one block is shifted on a basis of a start sample position of the other block. A sample delay value is estimated from a start sample position of the one block with a smallest MSE value such that a sample delay between a transmission signal and a feedback signal is closely estimated regardless of a frequency allocation (FA) value.

Method and apparatus for estimating a sample delay between a transmission signal and a feedback signal in a mobile communication system, and a base station transmitter using the same

An apparatus and method for eliminating the spurious signal of a non-linear amplifier in a base station transmitter of a mobile communication system are provided. A digital predistorter includes first and second predistorters, each having a memoryless non-linearity part using a look-up table and a memory non-linearity part using an finite impulse response (FIR) filter. The first predistorter adaptively updates the look-up tables, while the second predistorter adaptively updates the filtering coefficients of the FIR filters. According to another embodiment of the present invention, a digital predistorter has a memoryless non-linearity part using a look-up table and a memory non-linearity part using an FIR filter, and adaptively updates the look-up table and the filtering coefficients of the FIR filter.

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Suwon-si, South Korea

Yoo-Seung Song