A fast AGC method for multimode zero-IF/sliding-IF WPAN/BAN receivers

Author

Jingjing Dong ; Hanjun Jiang ; Zhaoyang Weng ; Jingyi Zheng ; Chun Zhang ; Zhihua Wang

Author_Institution

Tsinghua Nat. Lab. for Inf. Sci. & Technol., Tsinghua Univ., Beijing, China

fYear

2015

fDate

24-27 May 2015

Firstpage

1310

Lastpage

1313

Abstract

This paper presents a fast mixed-signal automatic gain control (AGC) method for zero-IF/sliding-IF receivers used in wireless personal and body-area networks (WPAN/BAN). The preamble defined in Bluetooth low energy (BLE)/802.15.4 /802.15.6 specifications are as low as 1 Byte. It is a tough challenge for the zero-IF/sliding-IF receivers to perform AGC training, frequency synchronization and symbol timing estimation. By detecting the RF input of the quadrature mixer, IF input of analog filter and ADC output, the proposed method can achieve a desired IF amplitude within 1 bit when interference signal is small and 3 bits when carrier-to-interference ratio (CIR) is -27dB.

Keywords

Bluetooth; automatic gain control; body area networks; filtering theory; mixers (circuits); radio receivers; radiofrequency interference; timing; 802.15.4 specification; 802.15.6 specification; ADC output; AGC training; Bluetooth low energy specification; IF input; RF input detection; analog filter; body-area networks; carrier-to-interference ratio; fast AGC method; fast mixed-signal automatic gain control method; frequency synchronization; interference signal; multimode sliding-IF BAN receivers; multimode sliding-IF WPAN receivers; multimode zero-IF BAN receivers; multimode zero-IF WPAN receivers; quadrature mixer; symbol timing estimation; wireless personal area networks; Bluetooth; Gain control; IEEE 802.15 Standard; Interference; Radio frequency; Receivers; Standards; WPAN/BAN; automatic gain control; receiver; sliding-IF; zero-IF;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2015 IEEE International Symposium on

Conference_Location

Lisbon

Type

conf

DOI

10.1109/ISCAS.2015.7168882

Filename

7168882