Abstract:
The present invention relates to a modulation method and apparatus with consideration of adaptive Hybrid Automatic Repeat reQuest (HARQ) in a wireless communication system. A method of a transmission end supporting a hybrid modulation technique based on Hybrid FSK and QAM Modulation (FQAM) comprises the steps of: collecting information on a channel state with a reception end; determining a modulation order of the FQAM according to the information on the channel state; and determining a Frequency Shift Keying (FSK) modulation order and a Quadrature amplitude modulation (QAM) order constituting the FQAM according to the modulation order thereof and the information thereon, thereby improves the performance of the HARQ and the FQAM which are expected for the size of a bit given per modulation symbol.
Abstract:
본발명의실시예에따르면, 제1 무선통신및 제2 무선통신을이용하는네트워크에서제2 기지국의통신방법에있어서, 제1 무선통신을이용하는제1 기지국으로부터제1 정보를수신하는단계, 상기제1 무선통신과다른통신방식으로제2 정보를수신하는단계, 상기제1 정보에기반하여제2 무선통신으로전송될제어정보및 상기제2 정보에기반하여상기제2 무선통신으로전송될데이터를식별하는단계및 상기식별된제어정보및 데이터로구성된신호를제2 무선통신으로전송하는단계를포함하는것을특징으로하는방법및 제2 기지국을제공할수 있다. 또한, 상기제2 기지국과통신하는제1 기지국및 제1 기지국의통신방법을제공할수 있다.
Abstract:
A probe card according to the technical idea of the present invention is the probe card for testing the electrical property of a device to be tested which includes a plurality of semiconductor devices. The probe card according to the present invention includes a substrate and at least one transmission antenna which is implemented with a COF type, is attached on the substrate, and wirelessly transmits at least one of power and data to each semiconductor device.
Abstract:
The present invention relates to a method of estimating a channel in a wireless communication system, which is suitable in a non-Gaussian environment, and an apparatus thereof. A method of estimating a channel in a wireless communication system according to the present invention includes the following steps of: generating a reference value by using a parameter concerned with a non-Gaussian property of a cell interference signal; comparing the reference value with the powers of a plurality of pilot symbols, respectively, to sort a valid pilot symbol which is not damaged by the cell interference signal; and estimating a channel by using the sorted valid pilot symbol.
Abstract:
본 발명은 무선 통신 시스템에서 송신기가 복수의 변조 및 부호화 기법들을 이용하여 신호를 송신하는 방법에 있어서, QAM(Quadrature Amplitude Modulation) 방식과 FSK(Frequency Shift Keying) 방식이 결합된 FQAM(Hybrid FSK and QAM Modulation) 방식을 기반으로 하는 FQAM 심볼에 포함되는 톤들 중 상기 FQAM 방식을 적용함으로써 부스팅된 액티브 톤의 위치와 인접 셀의 파일럿 톤의 위치가 충돌될 경우, 상기 FQAM 심볼에 포함되는 톤들 중 상기 파일럿 톤의 위치와 충돌되지 않는 적어도 두 개의 톤들을 검출하고, 상기 검출된 적어도 두 개의 톤들을 이용하여 신호를 전송한다.