High data rate CDMA wireless communication system
AssigneeQUALCOMM Incorporated
InventorJoseph P. Odenwalder
Life of this patent
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Abstract
A novel and improved method and apparatus for high rate CDMA wireless communication is described. A set of individually gain adjusted subscriber channels are formed via the use of a set of orthogonal subchannel codes. The set of sub-channel codes are comprised of four Walsh codes. The pilot data and control data are combined onto one channel. The remaining two transmit channels are used for transmitting non-specified digital data including user data or signaling data, or both.
Claims28
A method for generating modulated data for transmission from a subscriber unit to a base station, the method comprising:
- combining a pilot signal with a control signal to produce first channel data;
- multiplying a first data signal with a first code, said first code being orthogonal to said pilot signal, to produce second channel data;
- performing complex multiplication of said first channel data and said second channel data with a complex pseudonoise (PN) code, said complex PN code comprising an in-phase PN code and a quadrature-phase PN code.
A subscriber unit apparatus comprising:
- means for combining a pilot signal with a control signal to produce first channel data;
- means for multiplying a first data signal with a first code, said first code being orthogonal to said pilot signal, to produce second channel data;
- means for performing complex multiplication of said first channel data and said second channel data with a complex pseudonoise (PN) code, said complex PN code comprising an in-phase PN code and a quadrature-phase PN code.
A subscriber unit apparatus comprising:
- multiplexer for multiplexing a pilot signal with a control signal to produce first channel data;
- mixer for multiplying a first data signal with a first code, said first code being orthogonal to said pilot signal, to produce second channel data;
- complex spreader for performing complex multiplication of said first channel data and said second channel data with a complex pseudonoise (PN) code, said complex PN code comprising an in-phase PN code and a quadrature-phase PN code.
Dependencies are inferred from the claim text.