Invention Grant
US08493954B2 Method and apparatus for reducing digital to analog conversion (DAC) bits in frequency division multiple access (FDMA) system
失效
用于减少频分多址(FDMA)系统中的数模转换(DAC)位的方法和装置
- Patent Title: Method and apparatus for reducing digital to analog conversion (DAC) bits in frequency division multiple access (FDMA) system
- Patent Title (中): 用于减少频分多址(FDMA)系统中的数模转换(DAC)位的方法和装置
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Application No.: US12337702Application Date: 2008-12-18
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Publication No.: US08493954B2Publication Date: 2013-07-23
- Inventor: Jun-Kyu Kang , In-Tae Kang , Jeong-Gil Lee , Bo-Rham Lee , Sang-Min Bae
- Applicant: Jun-Kyu Kang , In-Tae Kang , Jeong-Gil Lee , Bo-Rham Lee , Sang-Min Bae
- Applicant Address: KR Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do
- Agency: Cha & Reiter, LLC
- Priority: KR10-2007-0133073 20071218
- Main IPC: H04L27/08
- IPC: H04L27/08 ; H04B7/208 ; H04B1/44 ; H04B7/204 ; H04B1/04 ; H04B1/06 ; H04B7/00 ; H01Q11/12

Abstract:
A method and an apparatus for reducing Digital-to-Analog Conversion (DAC) bits at a transmitter of a Frequency Division Multiple Access (FDMA) system reduces a number of the bits for conversion so as to save power and reduce the cost of operation. The method can include generating a digital signal gain control value and an analog signal gain control value using subcarrier allocation information, a required Signal to Noise Ratio (SNR), and a Peak to Average Power Ratio (PAPR); controlling a gain of a signal input to a digital-to-analog converter using the digital signal gain control value; converting a digital signal of the controlled gain to an analog signal using the digital-to-analog converter; and restoring an original signal by controlling a gain of a signal output from the digital-to-analog converter using the analog signal gain control value.
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