A low-power all-digital signal component separator for OFDM LINC systems

Tsan Wen Chen*, Ping Yuan Tsai, Jui Yuan Yu, Chen-Yi Lee

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

LINC can achieve linear amplification by using high-efficiency amplifiers. This work presents an all-digital LINC signal component separator (SCS) including the phase calculation digital signal processing and two digital-control phase shifters (DCPSs). With the duplicate DCPSs, a pre-calibration scheme is introduced to guarantee the codeword-to-phase linearity and accuracy under different PVT conditions. The proposed DCPS design provides 8-bit resolution at 100 MHz with RMS error 10 ps (0.36°) resulting in system EVM -29.21 dB with 64-QAM OFDM signals, and the performance can meet the requirements specified in IEEE 802.11a. This work is implemented in a 90nm CMOS process. With the voltage scaling scheme to specific power domains and the low-complexity DCPS design, the overall SCS consumes 850.51 μW from 0.5 V and 1.0 V supplies.

Original languageEnglish
Title of host publication1st International Conference on Green Circuits and Systems, ICGCS 2010
Pages328-333
Number of pages6
DOIs
StatePublished - 20 Sep 2010
Event1st International Conference on Green Circuits and Systems, ICGCS 2010 - Shanghai, China
Duration: 21 Jun 201023 Jun 2010

Publication series

Name1st International Conference on Green Circuits and Systems, ICGCS 2010

Conference

Conference1st International Conference on Green Circuits and Systems, ICGCS 2010
CountryChina
CityShanghai
Period21/06/1023/06/10

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