Abstract
Low power UWB receiver architecture is proposed for a Wireless Body Area Network (WBAN). This receiving technology is a synergy of existing downconversion-based narrowband rejection mechanism in RF front end and signal processing in frequency domain. Frequency components of converted and filtered UWB pulses are separated into real and imaginary parts, independently correlated and effectively combined to achieve an improved output Signal to noise ratio (SNR). An extensive mathematical analysis has been performed to formulate the close-form expressions for SNRs in order to compare system performances toward favorable BER under BPSK modulation scheme. Analysis shows that optimal rotation of coordination plays an important role for the enhancement of receiving SNR which is further confirmed by computer simulation. A wide range of link level simulation (LLS) urges that the proposed system is more power efficient in higher-order modulation (HOM) schemes. Transmitted Reference (TR) scheme has been considered as the basis for wideband communication.
Highlights
Cardiovascular disease is the leading cause of death [1,2,3,4] and it accounts for approximately 30% of all deaths worldwide [5] requiring giant healthcare expenditure [6]
This paper aims to develop an extremely low power receiver that can be employed for Wireless Body Area Network (WBAN)
We develop a new receiver architecture based on transmit reference scheme [12]
Summary
Cardiovascular disease is the leading cause of death [1,2,3,4] and it accounts for approximately 30% of all deaths worldwide [5] requiring giant healthcare expenditure [6]. A Wireless Body Area Network (WBAN) allows the integration of intelligent, miniaturized, low-power, invasive, and noninvasive sensor nodes to monitor body function and the surrounding environment [7]. Each intelligent node has enough capability to process and forward information to a base station for diagnosis and prescription. A WBAN provides long-term health monitoring of patients under natural physiological states without constraining their normal activities. It can be used to develop a smart and affordable health care system and can be part of diagnostic procedure, maintenance of chronic condition, supervised recovery from a surgical procedure, and handling emergency events. One of the major components of WBAN is low-power miniaturized sensor [7]. This paper aims to develop an extremely low power receiver that can be employed for WBAN
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