Abstract
A transmitter in a wireless communication system, such as a wide area code division multiple access (WCDMA) communication system, transmits one set of data in an in phase (I) channel and another set of data in a four phase (Q) channel. The transmitter generates a gain signal β and multiplies the digital data associated with the Q channel by the gain signal β. The complexity of the multiplication action is reduced by limiting the gain signal β to be a finite number of values that can be represented exactly by a specified number of bits, such as a 4-bit value to the right of the binary radix point. Modulation inaccuracies associated with the quantification of β can be eliminated by using the same quantization value β for all elements in the wireless communication system.
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