Baseband Signals and Power in Load-Modulated Digital Backscatter

Autor:	Daniel G. Kuester, Jeffrey R. Guerrieri, David R. Novotny
Rok vydání:	2012
Předmět:	Engineering business.industry Electrical engineering Keying Signal Amplitude-shift keying Interference (communication) Modulation Electronic engineering Baseband Electrical and Electronic Engineering business Frequency modulation Phase-shift keying
Zdroj:	IEEE Antennas and Wireless Propagation Letters. 11:1374-1377
ISSN:	1548-5757 1536-1225
DOI:	10.1109/lawp.2012.2228460
Popis:	Passive digital backscatter signals in systems like radio frequency identification (RFID) are usually received along with strong interference from a leaked carrier. The simplest way to quantify the “useful” communication signal is to separate it as an amplitude-shift keying (ASK) or biphase-shift keying (BPSK) component. These definitions give different power normalizations, posing some complexity in comparison of link quantities. This letter investigates their suitability in terms of basic signal theory and conservation of energy to clarify relationships between the baseband signals and “backscattered power.” Defining received backscatter as BPSK guarantees energy conservation for arbitrary tag modulation loads.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::80007801ab7acc180e00f8ffdb79454d https://doi.org/10.1109/lawp.2012.2228460 Zobrazit plný text záznamu