Title :
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
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;
Conference_Titel :
Circuits and Systems (ISCAS), 2015 IEEE International Symposium on
Conference_Location :
Lisbon
DOI :
10.1109/ISCAS.2015.7168882
