A New Synchronization Scheme Exploiting Mean Energy Profile in UWB Non-coherent Receiver

Shin, Donghoon; Cho, Yong-Ho; Park, Dong-Jo

doi:10.1109/icc.2006.255576

Cited by 7 publications

(9 citation statements)

References 6 publications

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“…In [8], PAOCI is used to evaluate two-stage search strategy of differential transmitted reference system, which exploits large integral window to speed up search process during coarse acquisition phase, as well as short window in second stage to refine on the rough acquisition. For UWB ED system, energy detector is demonstrated to be better than single correlator with respect to MAT under a certain false detection probability in [9]. Recently, characteristics of multi-path channel are generally exploited for high quality signal acquisition, such as power delay profile of channel used in [10], and maximum of several blocks of MPCs energy in [11], both of which employ criteria by simulation.…”

Section: Related Work and Contributionsmentioning

confidence: 99%

The performance of ultra wideband acquisition system based on energy detection over IEEE 802.15.3a channel

Yang

Zhang

et al. 2011

Sci. China Inf. Sci.

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In this paper, we propose a theoretical framework to analyze the performance of ultra wideband acquisition (UWB) system based on energy detection (ED) over IEEE 802.15.3a channel. The proposed framework enables to calculate probability density function (PDF) of square-sum of multipath components (MPCs) gain collected by receiver, and the averaged criteria. In particular, the expectation and variance of the sum variant characterized approximately by log-normal distribution are expressed in a closed form based on cluster point process. Moreover, the calculating methods of averaged criteria, through Markov chain model and signal flow graph, are clearly demonstrated for different applicable scenarios. The proposed framework is well consistent with simulation results with respect to each calculation method. CitationYang Z H, Zhang Q Y, Zhang N T, et al. The performance of ultra wideband acquisition system based on energy detection over IEEE 802.15.3a channel.

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Section: Related Work and Contributionsmentioning

confidence: 99%

The performance of ultra wideband acquisition system based on energy detection over IEEE 802.15.3a channel

Yang

Zhang

et al. 2011

Sci. China Inf. Sci.

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“…However, each of these approaches requires one or more assumptions as follows: 1) multipath is either absent or known [2]; 2) time-hopping (TH) codes are absent [3]; 3) IFI or ISI is absent [3]- [9]; 4) the received signal is sampled at a formidably high rate, even higher than 10 GHz [7], [10]; 5) the system can afford the prohibitive complexity of exhaustively searching over thousands of bins [5]- [7]. Evidently, algorithms based on these assumptions are impractical for most realistic UWB settings.…”

Section: Introductionmentioning

confidence: 99%

Training based synchronization and efficient demodulation for UWB systems

Qiao

Sun

2009

2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications

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Relying on judicious training symbols, we can construct a redundance-included demodulation template (RDT) from the received signal. When the RDT is available, there are two approaches to select. One is to demodulate transmitted symbols directly by the RDT, which does not require timing acquisition, and thereby has considerably lower complexity. The alternative is to first acquire the timing offset via simple energy detection, which is used to amend the RDT to obtain a non-redundanceincluded demodulation template (NRDT), and then demodulate transmitted symbols with the aid of the NRDT. Both the two approaches can avoid the effects of inter-frame interference (IFI) and unknown multipath channels, and suppress the intersymbol interference (ISI). Simulation results demonstrate that the proposed algorithms are sound and efficient.

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“…Although the frame-level timing offset estimator is expressed in a closed form, it is actually based on a searching procedure due to its dependence on the searching-based estimator of the symbol-level offset. The data-aided synchronization scheme [8] is performed through energy comparison. However, it is tailored for the case that an information symbol consists of only one frame, thus not enabling multiple accesses.…”

Section: Introductionmentioning

confidence: 99%

“…Unlike the existing searching-based synchronization algorithms [3]- [7], our approach does not need for a time-consuming searching procedure, therefore considerably shortening the synchronization time. Different from the training based algorithm [8], our timing offset estimator is derived without knowledge on channel. Compared with the schemes in [9], the proposed algorithm remains operational for "cold start-up" scenario and does not need any training pattern or sequence, thus not sacrificing bandwidth and transmission efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Timing Acquisition Dispensing with Searching for UWB Communications

Ren¹,

Lv²

2009

Proceedings of the 6th International ICST Conference on Broadband Communications, Networks, and Systems

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Abstract-One of the biggest challenges in ultra-wideband (UWB) communications is the accurate and rapid timing acquisition for the receiver. This paper presents a timing acquisition scheme dispensing with searching for UWB communications. Without training sequence involved, timing offset parameter is estimated by exploiting a stream of alternating orthogonal pulses, and frame-level synchronization can be achieved without channel information at a low sampling rate of once per symbol. Without any searching procedure, the proposed algorithm not only considerably reduces synchronization time, but also improves synchronization performance relative to the existing alternatives in terms of normalized mean square error (NMSE) and bit error rate (BER), which is confirmed by simulations.

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A New Synchronization Scheme Exploiting Mean Energy Profile in UWB Non-coherent Receiver

Cited by 7 publications

References 6 publications

The performance of ultra wideband acquisition system based on energy detection over IEEE 802.15.3a channel

The performance of ultra wideband acquisition system based on energy detection over IEEE 802.15.3a channel

Training based synchronization and efficient demodulation for UWB systems

Timing Acquisition Dispensing with Searching for UWB Communications

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