Split shift phase sweep transmit diversity

Details Split shift phase sweep transmit diversity Split shift phase sweep transmit diversity

2005-12-27

2005-12-27

Bui, Bing Q. (Department: 2642)

Telecommunications

Transmitter

Diversity

C455S103000, C375S267000

Reexamination Certificate

active

06980778

ABSTRACT:
Disclosed is a method and apparatus of transmit diversity that is backward compatible and does not degrade performance using a transmission architecture that incorporates a form of phase sweep transmit diversity (PSTD) referred to herein as split shift PSTD. Split shift PSTD involves transmitting at least two phase swept versions of a signal over diversity antennas, wherein the two phase swept versions of the signal have a different phase. The phase sweep frequency signals may have a fixed or varying phase shifting rate, may have an identical or different phase shifting rate, may be offset from each other and/or may be phase shifting in the same or opposite direction.

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