Joint IR-UWB Power Spectral Lines and Interference Suppression Based on Coded Auxiliary Independent Signaling in Presence of Pulse Attenuation and Timing Jitter

• Published in: Wireless personal communications Vol. 69; no. 4; pp. 1241 - 1260
• Main Authors: Panahi, Farzad H., Falahati, Abolfazl
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.04.2013; Springer
• Subjects: Applied sciences; Coding, codes; Communications Engineering; Computer Communication Networks; Emergence; Engineering; Exact sciences and technology; Information, signal and communications theory; Mathematical models; Networks; Optimization; Policies; Radiocommunications; Signal and communications theory; Signal,Image and Speech Processing; Spectral lines; Statistics; Symbols; Telecommunications; Telecommunications and information theory; Ultrawideband; Mutual interference; ary signaling; FCC spectrum mask; Spectral lines; Symbol; Optimal policy; Jitter; Data transmission; Spectral line; Coexistence; Stochastic process; Modeling; Adaptive method; Convex programming; Optimization; M ary modulation; Ultrashort pulse; Monitoring; Streaming; Statistical analysis; Mask; Synchronization; Spectral analysis; Ultra wide band; Interference suppression; Reference system; M-ary signaling
• ISSN: 0929-6212; 1572-834X
• DOI: 10.1007/s11277-012-0632-4

This paper deals with spectral shaping problem in impulse radio ultra-wideband systems based on coded auxiliary independent signaling (AIS), as a modified version of transmitted-reference approach. In this manuscript, the main contribution includes a unified theoretical framework for spectral analysis which is, not only able to address all effective parameters in the emergence of spectral lines and coexistence issues, but also provides a convex optimization based method. This can produce AIS-aided signals using random process characteristics as optimization variables. In particular, the specific novelty insights of this paper are as follows: (i) to propose a new signal model, where each transmitted symbol is represented by a preamble AIS pulse followed by a set of transmitted data pulses that are synthesized in accordance with a codeword design and within this context, the preamble signal is designed to eliminate spectral lines via an adaptive monitoring of data-stream statistics as the optimal policy; (ii) to exploit the proposed spectral optimization strategies to maximize spectral flexibility.