Complementary coding key control and modulating method in radio communication
Title：
Complementary coding key control and modulating method in radio communication
Application Number：
 200310123849
Application Date：
 2003/12/31
Announcement Date：
 2004/12/22
Pub. Date：
Publication Number：
 1556635
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H04L 27/26
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Zhang Chao, Lin Xiaokang, Hatori Mitsutoshi
Key Words：
 Complementary, coding, key control, modulating method, radio communication
Abstract：
 The invention provides a complementary code keying modification method in wireless communication, which belongs to wireless communication technology field. In the complementary code keying modification in the wireless communication, it uses the zero correlation window code group to generate a abstract code group; assumes the complementary code keying modification code in wireless communication is Ci, Ci= {c1', c2', ..., c8'}, i=1, ..., 256, it is carried on with non-periodic self-correlation calculation or convolution with the Ak in above mentioned abstract code, k belongs to 1...M, acquires the CiAk, the indicates the non-periodic self-correlation calculation or convolution; carries on matching filter to the received CiAk signal, acquires the CiAkAk = Ci, then carries on decoding to the Ci. The method in the invention combines zero correlation window code, flow code, and several modifications. It leads in orthogonal vector in the modification technology, thus solves the problem of multi-user interference. If it is applied in the wireless local area network, it can transmit data on the physical layer, upgrade the data transmitting rate of user and the quantity of the wireless local area network.
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