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Code Acquisition at Low SINR in Spread Spectrum Communications
2006
2006 IEEE Ninth International Symposium on Spread Spectrum Techniques and Applications
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We consider the problem of code acquisition at low signal to interference and noise ratio (SINR) in packetbased spread spectrum communications, where a centralized "pilot" synchronization signal and high-precision ...
We motivate the use of the "postdetection integration" approach, which utilizes the energy of multiple bits in a packet, for code acquisition at low SINR. ...
ACKNOWLEDGMENT The authors would like to thank Sushil Singh, Cahit Akin and Yoav Nebat for helpful discussions. ...
doi:10.1109/isssta.2006.311816
fatcat:hzh3urvu7je5flvi3q64ndbl7i
A low SINR synchronization system for direct-sequence spread-spectrum communications: radio prototype, verification testbed and experimental results
2008
Proceedings of the 4th International ICST Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities
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Ability to receive signals at low signal to interference and noise ratio (SINR) improves the spatial range and reliability of wireless networks. ...
Our system uses a high spreading gain in the direct-sequence spread-spectrum (DSSS) modulation to combat the problems associated with low SINR. ...
Wireless communications in the low signal to interference and noise ratio (SINR) environment are becoming increasingly important although the low SINR makes communications difficult. ...
doi:10.4108/tridentcom.2008.3137
dblp:conf/tridentcom/AmdeSMYC08
fatcat:yekbasd4ubfdphp5ua2ytuhsnq
Design challenges for energy-constrained ad hoc wireless networks
2002
IEEE wireless communications
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Oxford English Dictionary, 2nd Edition IEEE Wireless Communications • August 2002 8 1070-9916/02/$17.00 ...
In this article we give a brief overview of ad hoc wireless networks and their applications with a particular emphasis on energy constraints. ...
Medard, and S. Toumpis for their detailed comments and suggestions. They are also grateful to S. Cui and A. MacKenzie for providing some of the figures. ...
doi:10.1109/mwc.2002.1028874
fatcat:s63q5cgzwzebbgekerw6p4pl7a
Ad Hoc Networks: To Spread or Not to Spread? [Ad Hoc and Sensor Networks]
2007
IEEE Communications Magazine
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Hasan, and X. Yang for their contributions to several of the ideas in this article. ...
and commercially viable applications including wireless community broadband access, backhaul for wireless LAN access points, and range extension for cell-based networks [1] . ...
The former is because at low spreading gains, the dominant interferer is likely to be outside the communication range and thus impossible to cancel via SIC. ...
doi:10.1109/mcom.2007.4395371
fatcat:liq2nkq3qvc3lffi52dixorw6q
On the evaluation of LoRaWAN virtual channels orthogonality for dense distributed systems
2017
2017 IEEE International Workshop on Measurement and Networking (M&N)
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In particular, measurements demonstrated that overlapping transmissions having the same power at the receiver can be correctly decoded if occurring with different spreading factors, whereas co-spread messages ...
Despite there is no one technology able to cope with all possible scenarios, LPWAN solutions are emerging as viable technologies for implementing private, low-cost cellular like wireless networks. ...
H&W grant "AQMaSC" and H&W grant "Smart Break 2". ...
doi:10.1109/iwmn.2017.8078371
dblp:conf/iwmn/FerrariFRSG17
fatcat:mlnkgo4nbjfylj7aost56s5hpe
Normalized Matched Filter for Blind Interference Suppression in Filter Bank Multicarrier Spread Spectrum Systems
2022
IEEE Access
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This paper proposes and analyzes a modification to the standard matched filtering operation utilized in filter-bank multicarrier spread spectrum (FB-MC-SS) communications. ...
It is shown that whereas the standard matched filter proves to be ineffective for packet detection and timing acquisition in such harsh environments, the modified matched filter successfully removes the ...
ACKNOWLEDGMENT The United States Government retains and the publisher, by accepting the paper for publication, acknowledges that the United States Government retains a nonexclusive, paidup, irrevocable ...
doi:10.1109/access.2022.3181227
fatcat:oqhnav3phzciph74spa5ybjv2y
Impacts of Narrowband Interference on OFDM-UWB Receivers: Analysis and Mitigation
2007
IEEE Transactions on Signal Processing
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Orthogonal frequency-division multiplexing (OFDM)-based ultra-wide-band (UWB) transceivers hold the promise to revolutionize the next generation of short-range wireless networks and to be adopted in electronics ...
Nevertheless, both these two acquisition schemes fail at high interference levels. ...
Therefore, in UWB channels, the SINR of each path is fairly low, and a simple magnitude comparator works poorly at low or middle SINRs. ...
doi:10.1109/tsp.2006.887153
fatcat:gvfejuffjzec3ibjmr7ixvi57m
Modeling low-power wireless communications
2015
Journal of Network and Computer Applications
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To the best of our knowledge this is the first work that reveals the essentials of accurate modeling and evaluation of low-power wireless communications. expected in real-world scenarios, or the effects ...
Low-power wireless communications has particular characteristics that highly affect the performance of network protocols. ...
Introduction A low-power wireless network is a collection of nodes with scarce energy, computational and communication resources. ...
doi:10.1016/j.jnca.2014.02.009
fatcat:ivv6aytgt5hixczu6efvvirgsq
Advanced Communication Solutions for Reliable Wireless Sensor Systems
[chapter]
2010
Smart Wireless Sensor Networks
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These new features assist the sensor nodes as well as the network to operate more efficiently in terms of both data acquisition and energy consumption. ...
The recent development of communication and sensor technology results in the growth of a new attractive and challenging area â€" wireless sensor networks (WSNs). ...
Frequency Hopping Spread Spectrum (FHSS) and Direct Sequence Spread Spectrum (DSSS) are the main methods in the class of spread spectrum technologies. ...
doi:10.5772/13770
fatcat:6zae55lvwfg7vlgkta7q5flf64
Software-defined-radio-assisted adaptive broadband frequency hopping multicarrier DS-CDMA
2002
IEEE Communications Magazine
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Against the backdrop of the explosive expansion of the Internet and the continued dramatic increase in demand for high-speed multimedia wireless services, there is an urgent demand for flexible, bandwidth-efficient ...
In the short term, the proposed FH/MC DS-CDMA scheme could be employed in the existing second-and third-generation CDMA system bands. ...
at the highest spectrum efficiency. ...
doi:10.1109/35.989783
fatcat:bv2tses7sjbk5lh2plvrika4xa
Massive MIMO and Waveform Design for 5th Generation Wireless Communication Systems
[article]
2016
arXiv
pre-print
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This article reviews existing related work and identifies the main challenges in the key 5G area at the intersection of waveform design and large-scale multiple antenna systems, also known as Massive MIMO ...
Our findings shed light into and motivate for an entirely new research line towards a better understanding of waveform design with emphasis on FBMC-based Massive MIMO networks. ...
The target output SINR of 20 dB may be calculated as SNR in + 10 log 10 M , where SNR in is the Signalto-Noise Ratio (SNR) at each BS antenna, and 10 log 10 M is the spreading gain due to M BS antennas ...
arXiv:1501.00305v2
fatcat:kf7zjynzenb27gjfc4dxw3oauq
Effective packet scheduling with fairness adaptation in ultra-wideband wireless networks
2007
IEEE Transactions on Wireless Communications
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Based on the findings, two MAC packet scheduling schemes are proposed to exploit the system capacity and, at the same time, to achieve a certain level of fairness in UWB wireless networks. ...
in UWB-based wireless networks. ...
However, the inherent spread spectrum in UWB can support simultaneous transmissions, with an appropriate pseudorandom sequence design and effective call admission control (CAC), referred to as multi-channel ...
doi:10.1109/twc.2007.05340
fatcat:t2akxfk3orcklhq5ok5kfnd4w4
Performance Analysis of the IEEE 802.15.4 Protocol for Smart Environments under Jamming Attacks
2021
Sensors
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Jamming attacks in wireless sensor networks (WSNs) scenarios are detrimental to the performance of these networks and affect the security and stability of the service perceived by users. ...
Finally, based on the evaluated metrics and with the proposed experimental testbed, our findings offer a better understanding of jamming attacks on the sensor devices in real smart scenarios. ...
Additionally, Direct Sequence Spread Spectrum (DSSS) transmit scheme is used to promote coexistence in the frequency band. ...
doi:10.3390/s21124079
fatcat:d6634e4mmzhepkuov5b66k2iki
Effective Packet Scheduling with Fairness Adaptation in Ultra Wideband Wireless Networks
2006
Proceedings IEEE INFOCOM 2006. 25TH IEEE International Conference on Computer Communications
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Based on the findings, two MAC packet scheduling schemes are proposed to exploit the system capacity and, at the same time, to achieve a certain level of fairness in UWB wireless networks. ...
in UWB-based wireless networks. ...
However, the inherent spread spectrum in UWB can support simultaneous transmissions, with an appropriate pseudorandom sequence design and effective call admission control (CAC), referred to as multi-channel ...
doi:10.1109/infocom.2006.153
dblp:conf/infocom/JiangZ06
fatcat:oh3iososkzdnnh2dvzqyfgelzu
Miracle: The Multi-Interface Cross-Layer Extension of ns2
2010
EURASIP Journal on Wireless Communications and Networking
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Finally, we provide an overview of the wireless technologies implemented in Miracle, discussing in particular the models for the IEEE 802.11, UMTS and WiMAX standards and for Underwater Acoustic Networks ...
This framework facilitates the development of more realistic Channel, PHY and MAC modules, considering features currently lacking in most state-of-the-art simulators, while at the same time giving a strong ...
Acknowledgments The work at the Centre Tecnològic de Telecomunications de Catalunya was partially supported by the Catalan Regional Government under grant 2009SGR-940 and by the Democles (R) project [ ...
doi:10.1155/2010/761792
fatcat:6zewnz3gkrcydi5dmg3bbnc77i
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