Code-Assisted Blind Synchronization for UWB Systems

Ghogho, Mounir; Ying, Yeqiu

doi:10.1109/icc.2006.255472

Cited by 5 publications

(12 citation statements)

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“…These reasons explain why synchronization has received so much importance in UWB research e.g. [3], [4], [5] and references therein. In this work, we consider blind synchronization since non data aided algorithms are desired in many potential UWB radio applications such as Wireless sensor and ad hoc networks where training sequence may not be available.…”

Section: Introductionmentioning

confidence: 99%

“…It requires relatively long data records to reliably estimate the statistics on which it relies. In [3], a blind synchronization system (CABS) was proposed. It consists on changing the polarity of the pulses using carrefully designed codes that will be exploited to perform acquisition by correlating the received signal with the code template.…”

Section: Introductionmentioning

confidence: 99%

“…It consists on changing the polarity of the pulses using carrefully designed codes that will be exploited to perform acquisition by correlating the received signal with the code template. It was shown that [3] outperforms [2]. Moreover, [2] and [3] both need long data records to achieve good performance which increases the complexity of the system.…”

Section: Introductionmentioning

confidence: 99%

“…It was shown that [3] outperforms [2]. Moreover, [2] and [3] both need long data records to achieve good performance which increases the complexity of the system. Capitalizing on the unique differential structure and the prior knowledge of the time hopping (TH) codes, [9] can achieve synchronization but it suffers from remarkable performance degradation because of the severe noise cross noise effect.…”

Section: Introductionmentioning

confidence: 99%

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Timing Acquisition and Demodulation of an UWB System Based on the Differential Scheme

Abri¹

2012

IJCNC

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Blind synchronization constitutes a major challenge in realizing highly efficient ultra wide band (UWB) systems because of the short pulse duration which requires a fast synchronization algorithm to accomodate several asynchronous users. In this paper, we present a new Code Block Synchronization Algorithm (CBSA) based on a particular code design for a non coherent transmission. Synchronization algorithm is applied directly on received signal to estimate timing offset, without needing any training sequence. Different users can share the available bandwith by means of different spreading codes with different lengths. This allows the receiver to separate users, and to recover the timing information of the transmitted symbols. Simulation results and comparisons validate the promising performance of the proposed scheme even in a multi user scenario. In fact, the proposed algorithm offers a gain of about 3 dB in comparaison with reference [5].

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Timing Acquisition and Demodulation of an UWB System Based on the Differential Scheme

Abri¹

2012

IJCNC

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“…Synchronization algorithms following an all-digital route have to cope with some prohibitive implementation hurdles such as the requirement of an extremely high speed analog-to-digital converter, estimation of a large number of channel parameters, and a RAKE receiver structure with a large number of fingers [6]. This motivates the research of designing low complexity semi-analog methods [7] [8]. In [8] we proposed a code-assisted blind synchronization (CABS) algorithm based on the discriminative property of a welldesigned polarity code and the time hopping (TH) code of the desired user.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Code-Assisted Blind Synchronization for UWB Systems

Ying

Ghogho

Swami³

2007

2007 IEEE International Conference on Communications

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Timing synchronization is a preeminent challenge in ultra-wideband impulse radios (UWB-IRs). The conventional all-digital synchronization methods encounter some formidable implementation difficulties such as high rate sampling and high complexity RAKE structure. To avoid these challenges, semianalog methods have been motivated recently. We have recently proposed a code-assisted blind synchronization (CABS) algorithm to realize timing synchronization blindly with the help of the discriminative property of both time hopping codes and welldesigned polarity codes. The algorithm requires sampling at the frame rate only and bypasses channel estimation during the synchronization phase. This paper analyzes the identifiability and both the probability of acquisition and the the mean square error performance of CABS analytically. A data-aided code-assisted synchronization (CAS) algorithm is also proposed and a modified version of CABS which relies solely on the time hopping code is investigated.

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Notice of Violation of IEEE Publication Principles - An improved CABS capture algorithm for PAM-UWB

Chen

Song

et al. 2008

2008 9th International Conference on Signal Processing

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Code-Assisted Blind Synchronization for UWB Systems

Cited by 5 publications

References 12 publications

Timing Acquisition and Demodulation of an UWB System Based on the Differential Scheme

Timing Acquisition and Demodulation of an UWB System Based on the Differential Scheme

Analysis of Code-Assisted Blind Synchronization for UWB Systems

Notice of Violation of IEEE Publication Principles - An improved CABS capture algorithm for PAM-UWB

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