US6337876B1

Not Available

Title

CONTROL OF POWER RATIOS FOR IN-PHASE AND QUADRATURE CHANNELS IN A COMMUNICATIONS SYSTEM

Application Number:

US19980140470

Family ID:

Publication Date:

08-01-2002

Application Date:

26-08-1998

Priority Date:

26-08-1998

Publication Country:

US

Declaring Company:

Abstract  Abstract

A transmitter in a radiocommunications system such as a Wideband Code Division Multiple Access (WCDMA) communications system transmits one set of data on an in-phase (I-) channel and another set of data on a quadrature (Q-) channel. The transmitter generates a gain signal ? and multiplies the digital data associated with the Q-channel by the gain signal ?. Complexity of the multiplication operation is reduced by limiting the gain signal ? to a finite number of values that are exactly representable by a predefined number of bits such as 4-bit values to the right of a binary radix point. Modulation inaccuracy associated with quantization of ? can be eliminated by utilizing the same quantized values of ? in all components within the radiocommunications system.

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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

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