Title:
A METHOD OF SPREAD SPETRUM OF MULTI-CODE CHANNELS FOR LS CODES
Document Type and Number:
WIPO Patent Application WO/2004/002037
Kind Code:
A1
Abstract:
A method of spread spectrum of multi-code channels for LS codes comprises the steps of: regulating the sequence of the input information at the transmission side; performing the transformation with a fast hadamard transform (FHT) for the regulated data; performing the LS transformation for the transformed date so as to form c spread spectrum of multi-code channels and d spread spectrum of multi-code channels; despreading the received data at the receiving side. The invention provides a process for performing spread/despread spectrum of multi-code channels by using a fast hadamard transform, based on the property of correlation between LS codes and hadamard matrix, therefore implements the spread/despread spectrum of multi-code channels with high efficiency and low complexity.
Inventors:
ZHANG XUEPENG (CN)
WANG XIAOFENG (CN)
WANG XIAOFENG (CN)
Application Number:
PCT/CN2002/000436
Publication Date:
December 31, 2003
Filing Date:
June 21, 2002
Export Citation:
Assignee:
LINKAIR COMM INC (US)
ZHANG XUEPENG (CN)
WANG XIAOFENG (CN)
ZHANG XUEPENG (CN)
WANG XIAOFENG (CN)
International Classes:
H04J11/00; H04J13/00; H04J13/22; H04B1/707; (IPC1-7): H04J13/02
Domestic Patent References:
| WO2000044106A1 | 2000-07-27 |
Foreign References:
| CN1302126A | 2001-07-04 | |||
| CN1249090A | 2000-03-29 |
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENT LTD. (Beijing 8, CN)
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