Generalized UWB transmitted reference systems

Franz, Stefan; Mitra, Urbashi

doi:10.1109/jsac.2005.863829

Cited by 71 publications

(25 citation statements)

References 15 publications

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“…A viable yet sub-optimal alternative for efficient energy capture is given by the transmitted-reference (TR) method [7] and its variants [8]- [11]. The received waveform resulting from "information-free" reference pulse(s) is used as noisy template in a simple correlation receiver for data detection, thereby bypassing path-by-path channel estimation.…”

mentioning

confidence: 99%

Multiple symbol differential detection for UWB communications

Lottici

Tian

2008

IEEE Trans. Wireless Commun.

109

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Abstract-Multiple symbol differential detection (MSDD) offers high-performance symbol recovery and bypasses training or channel estimation, which are highly desired features in lowpower ultra-wideband (UWB) communications. However, UWB impulse radios entail distinct signaling structures and stringent performance-complexity requirements, giving rise to the need for a new MSDD scheme capable of coping with dense multipath UWB channels and detecting a large block of symbols at practical complexity. To this end, this paper develops a novel MSDD-based UWB receiver that attains the desired performance advantages by jointly detecting blocks of received symbols based on the autocorrelation principle. To enable practical implementations at desired performance versus complexity tradeoffs, new optimization formulations are introduced to derive fast implementation algorithms inspired by powerful signal processing tools including sphere decoding and Viterbi algorithm, in both softand hard-decision versions. Extensive simulations testify the realistic performance of the proposed detectors in the presence of multiple access interference, timing synchronization errors and low-resolution digital-to-analog conversion.

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mentioning

confidence: 99%

Multiple symbol differential detection for UWB communications

Lottici

Tian

2008

IEEE Trans. Wireless Commun.

109

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“…To make our presentation as compact as possible, we use the complex envelope concept to define the signals as explained in (Franks, 1969). Furthermore, we use some matrix equations, which are explained in (Marple, 1987).…”

Section: Conceptual Analysismentioning

confidence: 99%

Low Complexity Phase-Unaware Detectors Based on Estimator-Correlator Concept

Anttonen¹,

Mämmelä²,

Pasupathy³

2011

Ultra Wideband Communications: Novel Trends - System, Architecture and Implementation

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“…Also, the complicated channel impulse response (CIR) estimation needs much energy. Even for the transmitted-reference (T-R) scheme, the energy efficiency (e.g., typically about 50%) may be greatly satisfied as a compromise of simple realizations [15]. Apparently, these practical difficulties either complicate system design or greatly deteriorate the appealing low-power characteristics, making UWB based green communications not available.…”

Section: Introductionmentioning

confidence: 99%

Ultra-spectra communication system (USCS): a promising way to energy-efficient green communication networks

Zhou

Zou

2012

J Wireless Com Network

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In this article, we investigate a promising transmission approach for green communication networks. By combining the appealing single-cycle modulation technique with traditional pulse modulation found on the underlay communication philosophy, the presented ultra-spectra communication system can improve the energy efficiency significantly. In transceiver, the emission signal contains two parts, the information-bearing baseband waveform with an extremely short duration and the information-synchronized carrier component. Alternatively, without carrier signaling the intermittent emission can be adopted to further reduce its operational power. By optimally allocating the power in different bands, a water-filling emission spectrum inspired by a novel conception of radius basis function neural-network is proposed for maximizing transmission energy efficiency in the presence of external interference. In receiver, the carrier-synchronized signal greatly alleviates the power-consumed timing acquisition, and provides extremely precise synchronization for information detection in intensive multipath environments. In addition, from a pattern classification perspective, a low-complexity noncoherent detection scheme is suggested to enhance receiving performance and minimize energy consumption. Performance analysis demonstrated that the whole transmission scheme can indeed be realized within an ultra-low-power framework, which shows great advantages to traditional strategies.

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Generalized UWB transmitted reference systems

Cited by 71 publications

References 15 publications

Multiple symbol differential detection for UWB communications

Multiple symbol differential detection for UWB communications

Low Complexity Phase-Unaware Detectors Based on Estimator-Correlator Concept

Ultra-spectra communication system (USCS): a promising way to energy-efficient green communication networks

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