Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-09-13
2005-09-13
Bocure, Tesfaldet (Department: 2631)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S150000
Reexamination Certificate
active
06944208
ABSTRACT:
An interference cancellation apparatus and method may remove interference from a directional array combined signal that is received by an array antenna and array combined on a directivity-by-directivity basis. The apparatus and method input a plurality of array combined signals subjected to array combining on a directivity-by-directivity basis to select an array-combined signal corresponding to a path. A correlation value is detected between the selected array combined signal and a spread code. Detected correlation values are combined to generate a combined value, and the combined value is used to generate a temporarily determined value. The temporarily determined value is re-spread to generate a re-spread signal, and re-spread signals are sorted for every directivity, on a per path basis. The re-spread signals sorted for every directivity are then added to generate a replica signal.
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Miya Kazuyuki
Miyoshi Ken'ichi
Bocure Tesfaldet
Flanagan Krista
Matsushita Electric - Industrial Co., Ltd.
Stevens Davis Miller & Mosher LLP
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