A Low-Power and Flexible Energy Detection IR-UWB Receiver for RFID and Wireless Sensor Networks

Abstract

This paper presents an energy detection Impulse Radio Ultra-Wideband (IR-UWB) receiver for Radio Frequency Identification (RFID) and Wireless Sensor Networks (WSN) applications. An Application-Specific Integrated Circuit (ASIC) consisting of a 3-5 GHz analog front-end, a timing circuit and a high speed baseband controller is implemented in a 90 nm standard CMOS technology. A Field-Programmable Gate Array (FPGA) is employed as a reconfigurable back-end, enabling adaptive baseband algorithms and ranging estimations. The proposed architecture is featured by high flexibility that adopts a wide range of pulse rate (512 kHz-33 MHz), processing gain (0-18 dB), correlation schemes, synchronization algorithms, and modulation schemes (PPM/OOK). The receiver prototype was fabricated and measured. The power consumption of the ASIC is 16.3 mW at 1 V power supply, which promises a minimal energy consumption of 0.5 nJ/bit. The whole link is evaluated together with a UWB RFID tag. Bit error rate (BER) measurement displays a sensitivity of 79 dBm at 10 Mb/s with BER achieved by the proposed receiver, corresponding to an operation distance over 10 meters under the FCC regulation.Index Terms-Energy detection, Internet-of-Things, low power receiver, sensitivity, ultra-wideband (UWB).

A hybrid reader tranceiver design for industrial internet of things

“…Given a bit error rate (BER) requirement of 10 −3 , the required SNR of system using OOK modulation is derived to be −10 . 5 dB for a data rate of 10Mbps [16] . According to the assumptions above, the link budget can be calculated as follows:…”

A flexible back-end with optimum threshold estimation for OOK based energy detection IR-UWB receivers

“…1 [5]. The Federal Communication Commission (FCC) approved commercial UWB operation in the 3.1-10.6 GHz band [6].…”

Adaptive synchronization and integration region optimization for energy detection IR-UWB receivers

“…Impulse Radio Ultra-Wideband (IR-UWB) technology is attracting much attention as one promising solution for future Radio Frequency Identification (RFID) and Wireless Sensor Networks (WSN) [1]. Various receiver architectures have been devised for the reception of IR-UWB signals.…”