Training-Based Synchronization and Demodulation With Low Complexity for UWB Signals

Lv, Tiejun; Qiao, Yulong; Wang, Zicheng

doi:10.1109/tvt.2011.2166815

Cited by 6 publications

(3 citation statements)

References 23 publications

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“…One such algorithm with improved performance using fewer number of symbols is proposed in [18], which can be utilized under both non-data-aided (NDA) and DA scenarios. Exploiting the discriminative nature of similar binary codes, several other timing algorithms resilient to different types of interferences such as IFI and ISI [19], MUI [20], nearfar problem [21], and a low-complexity demodulator [22] have also been proposed.…”

Section: Overview Of Existing Methodsmentioning

confidence: 99%

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Low-complexity synchronization algorithms for orthogonally modulated IR-UWB systems

Akbar

Rădoi

Azou

et al. 2013

J Wireless Com Network

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Timing synchronization is a major issue for any communication system since it is essential to ensure its stable operation and reliable performance. In this paper, we compare two low-complexity synchronization algorithms for impulse radio ultra-wideband (IR-UWB) system, employing orthogonal pulse shape modulation (PSM). The two widely adopted modulation schemes for IR-UWB systems are binary pulse amplitude modulation and binary pulse position modulation. However, the possibility of generating orthogonal UWB pulses in recent years has motivated the use of orthogonal PSM which is particularly attractive as high-order modulation and also due to its possible robustness against ISI, and therefore is the focus of this paper. Relying on the unique signal format, the first algorithm applies simple overlap-add operation followed by energy detection to achieve synchronization. This approach is semi non-data-aided (NDA) because a part of the signal is specifically reserved to help enable synchronization. The other algorithm, on the other hand, exploits the discriminating nature of well-designed polarity codes and employs a series of code word matching and averaging operations to achieve synchronization. This approach is full NDA as there is no need to interrupt the data transmission. Based on the judicious change in the phase of transmitted signal applied for synchronization purposes, the second algorithm can also be used to extract synchronized aggregate templates. These templates are then used in demodulation, resulting in a low-complexity non-coherent alternative to complex Rake receivers. The two compared timing algorithms rely on simple overlap-add operations and thus remain operational under practical UWB settings. Simulation results are provided to demonstrate the efficient performance of proposed timing estimators.

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Section: Overview Of Existing Methodsmentioning

confidence: 99%

“…Due to these reasons, synchronization has been much emphasized by UWB researchers, and several timing algorithms have been proposed in the past [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. A brief literature review of synchronization techniques is presented in the next section.…”

Section: Introductionmentioning

confidence: 99%

Low-complexity synchronization algorithms for orthogonally modulated IR-UWB systems

Akbar

Rădoi

Azou

et al. 2013

J Wireless Com Network

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“…3) Literature Review: The summary of the research carried out to achieve timing and carrier synchronization in UWB communication systems is given in Table XIX: 1) Timing synchronization alone considering IR-UWB communication system is studied in [386,388]. 2) Carrier synchronization alone is studied in [383,385,387,389,390,391,392,393,394], where as identified in second column of Table XIX, [383,385,387] consider IR-UWB communication and [389,390,391,392,393,394] consider MB-OFDM UWB communication.…”

Section: G Multicell Interference Based Communication Systemsmentioning

confidence: 99%

Timing and carrier synchronization in wireless communication systems: a survey and classification of research in the last 5 years

Nasir

Durrani

Mehrpouyan

et al. 2016

J Wireless Com Network

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Timing and carrier synchronization is a fundamental requirement for any wireless communication system to work properly. Timing synchronization is the process by which a receiver node determines the correct instants of time at which to sample the incoming signal. Carrier synchronization is the process by which a receiver adapts the frequency and phase of its local carrier oscillator with those of the received signal. In this paper, we survey the literature over the last 5 years (2010)(2011)(2012)(2013)(2014) and present a comprehensive literature review and classification of the recent research progress in achieving timing and carrier synchronization in single-input single-output (SISO), multiple-input multiple-output (MIMO), cooperative relaying, and multiuser/multicell interference networks. Considering both single-carrier and multi-carrier communication systems, we survey and categorize the timing and carrier synchronization techniques proposed for the different communication systems focusing on the system model assumptions for synchronization, the synchronization challenges, and the state-of-the-art synchronization solutions and their limitations. Finally, we envision some future research directions.

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Synchronization algorithm for multiuser digital IR-UWB system

Zhang

Dang

et al. 2014

2014 IEEE International Wireless Symposium (IWS 2014)

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Training-Based Synchronization and Demodulation With Low Complexity for UWB Signals

Cited by 6 publications

References 23 publications

Low-complexity synchronization algorithms for orthogonally modulated IR-UWB systems

Low-complexity synchronization algorithms for orthogonally modulated IR-UWB systems

Timing and carrier synchronization in wireless communication systems: a survey and classification of research in the last 5 years

Synchronization algorithm for multiuser digital IR-UWB system

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