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Registered TRANSMITTING AND RECEIVING SYSTEMS FOR INCREASING SERVICE COVERAGE IN ORTHOGONAL FREQUENCY D

OFDM 기반 무선LAN 시스템에서의 OFDM 심벌 반복을 통한 시스템 커버리지 확대 방법 및 그 장치
이미지 확대
Inventors
Heejung Yu, Sok-Kyu Lee, Lee Il Gu, Yoon Chanho, Son Jungbo, Choi Eun-Young, Bang Seung Chan, Hwang Seung Ku, Lyu Deuk-Su, 전태현, Min Seung Wook
Application No.
11635927 (2006.12.08)
Publication No.
20070115802 (2007.05.24)
Registration No.
7839760 (2010.11.23)
Country
UNITED STATES
Project Code
05MM1100, Research on 4G Mobile Communications Technology, Hwang Seung Ku
Abstract
The present invention relates to an orthogonal frequency division multiplexing wireless local area network (LAN) transmitting/receiving system for providing expanded service coverage, and a method thereof. A first OFDM modulation is performed for an even-numbered time, and a second OFDM modulation is performed for an odd-numbered time. A transmitting frame including a plurality of signal fields according to the first and second OFDM modulation is transmitted. The receiving system determines whether a signal field is repeatedly generated in the frame. If the signal field is not repeatedly generated, corresponding demodulation is performed. If repeatedly performed, the signal field is demodulated by using first bit allocation information and second bit allocation information having a � value of the first bit allocation information. A data field is demodulated according to the demodulated signal field
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Status Patent Country KIPRIS
Registered TRANSMITTING AND RECEIVING SYSTEMS FOR INCREASING SERVICE COVERAGE IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING WIRELESS LOCAL AREA NETWORK, AND METHOD THEREOF UNITED STATES