Invention Grant
- Patent Title: Method and device for mitigation of multi-user interference in code division multiple access
- Patent Title (中): 用于在码分多址中减轻多用户干扰的方法和装置
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Application No.: US11354355Application Date: 2006-02-14
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Publication No.: US08493953B1Publication Date: 2013-07-23
- Inventor: Christian Schlegel , Thomas R. Giallorenzi , Zachary Bagley
- Applicant: Christian Schlegel , Thomas R. Giallorenzi , Zachary Bagley
- Applicant Address: US NY New York
- Assignee: L-3 Communications
- Current Assignee: L-3 Communications
- Current Assignee Address: US NY New York
- Agency: Kirton McConkie
- Main IPC: H04B7/216
- IPC: H04B7/216 ; H04B1/10 ; H04J13/00

Abstract:
A method and apparatus for mitigating multi-user interference in reception of a code division multiple access (CDMA) signal is described. The CDMA signal has a plurality of spread user symbol streams, each spread by a corresponding one of a plurality of spreading codes. Estimated symbols are iteratively improved by forming a reconstructed signal from the estimated symbols, subtracting the reconstructed signal from the CDMA signal to create a difference signal, and adjusting the estimated symbols based on a combination of the difference signal and the estimated symbols.
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