An energy-efficient OFDM ultra-wideband digital radio architecture

被引：0

作者：

Chung, SW ^{[1
]}

Lee, SY ^{[1
]}

Park, KH ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Taejon 305701, South Korea

来源：

2004 IEEE WORKSHOP ON SIGNAL PROCESSING SYSTEMS DESIGN AND IMPLEMENTATION, PROCEEDINGS | 2004年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose an energy efficient architecture utilizing peak-to-average power ratio (PAR) information in transmitter and receiver side. It is identified that the energy consumption of digital-to-analog (D/A) and analog-to-digital (AID) conversion is the most critical bottleneck in realizing energy efficient digital radios with high data rate. Therefore, our transmitter reduces requantization noise in D/A conversion by digital OFDM symbol up-scaling before D/A conversion and analog OFDM symbol inverse-scaling after D/A conversion. Our receiver reduces quantization noise in AID conversion by fine tracking automatic gain control (AGC) for each OFDM symbol, after coarse AGC is performed. The proposed architecture reduces a power consumption of D/A and AID conversion by up to 24% while providing the same performance as conventional one.

引用

页码：211 / 216

页数：6