Method and system of orthogonalizing signal transmitted from BS applied to OFDM access

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United States of America Patent

APP PUB NO 20070258529A1
SERIAL NO

11789673

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Abstract

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A method of orthogonalizing signals transmitted from a BS in an OFDMA system, at a transmitting end, includes a) performing encoding, interleaving and modulation on original information bits; b) allocating sub-carriers with equivalent intervals to a sub-channel, and dividing channels into two parts of a cell edge user channel and a center area channel; c) mapping modulated information symbols to the corresponding sub-carriers; d) performing orthogonalizing processing on the two parts of channels; e) for a user at an edge of the cell, according to result of step b), dividing an OFDM symbol into subsections of equal length; f) multiplying the subsections obtained from step e) by a corresponding orthogonalizing sequence of the cell; g) adding the OFDM symbols of the two parts together to form a whole OFDM symbol; h) adding a cyclic prefix for the system; and i) performing D/A conversion, RF processing and feedback over a transmitting antenna on a base-band signal.

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Patent Owner(s)

Patent OwnerAddress
SAMSUNG ELECTRONICS CO LTD129 SAMSUNG-RO YEONGTONG-GU SUWON-SI GYEONGGI-DO 16677
BEIJING SAMSUNG TELECOM R&D CENTER4F SCIENCE AND TECHNOLOGY TOWER NO 11 ZHONGGUANCUN NAN LU BEIJING 100081 HAIDIAN DISTRICT

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cho, Young-Kwon Suwon-si, KR 92 2784
Hong, Sung-Kwon Seoul, KR 38 796
Liang, Zongchuang Baijing, CN 10 142
Oh, Chang-Yoon Yongin-si, KR 44 859
Park, Dong-Seek Yongin-si, KR 206 5098

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