463 Hits in 7.4 sec

Orthogonal Frequency Division Multiplexing and its Applications [article]

Ankit Chadha, Neha Satam, Beena Ballal
2013 arXiv   pre-print
This paper gives an overview of OFDM, its applications in various systems such as IEEE 802.11a, Digital Audio Broadcasting (DAB) and Digital Broadcast Services to Handheld Devices (DVB-H) along with its  ...  Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier modulation technique which is very much popular in new wireless networks of IEEE standard, digital television, audio broadcasting and  ...  DAB uses a rate quarter convolutional code with a constraint length of 7 for error-correction.  ... 
arXiv:1309.7334v1 fatcat:jjwvw2exf5fvjgdclbh67l6f2u

BER Staging of Coded-OFDM with Binary and Non-Binary Coding Techniques for LTE Uplink Transmission

GBSR Naidu
2020 International Journal of Emerging Trends in Engineering Research  
It is shown that RS coded OFDM system performs well under burst error channels and BCH codes are able to provide better error correction capability under lower order modulations.  ...  Forward error correction techniques play a key role to detect and correct the transmission errors. Hence, there is a need to study the performance of these systems under various network conditions.  ...  So we have GF(q) over which BCH codes are defined and they can correct several errors, burst errors and are pretty strong in the error correcting capability.  ... 
doi:10.30534/ijeter/2020/48832020 fatcat:v5ymqczipzbtncrcsblnookgfm

Energy Efficient Pulsed-UWB CMOS Circuits and Systems

David D. Wentzloff, Fred S. Lee, Denis C. Daly, Manish Bhardwaj, Patrick P. Mercier, Anantha P. Chandrakasan
2007 2007 IEEE International Conference on Ultra-Wideband  
The transmitter uses an all-digital architecture and calibration technique to synthesize pulses with programmable width and center frequency.  ...  A custom UWB transceiver chipset is presented that communicates in three 550MHz-wide channels in the 3.1 to 5GHz band by using pulse position modulation (PPM).  ...  No error correction or coding is used on the image data so that errors are visible in the image, providing a visual indication of the quality of the wireless link. VI.  ... 
doi:10.1109/icuwb.2007.4380956 fatcat:cor4q2qqpnec5n34mfoqukyspu

Error Control and performance Analysis of MIMO-OFDM Over Fading Channels

C Nithiya
2013 IOSR Journal of Electronics and Communication Engineering  
Forward error correction or channel coding is a technique used for controlling errors in data transmission over unreliable or noisy communication channels.  ...  Multiple Input Multiple Output is a wireless technology that uses multiple transmitters and receivers to transfer more data at the same time.  ...  The BER is calcu lated by comparing the input data with that of the recovered data. The system is simu lated over different ranges of SNR and the corresponding BER was calculated.  ... 
doi:10.9790/2834-0641218 fatcat:idd5zjv2dvbeferbqa4qjxfqcy

An Experimental Study on Channel Estimation and Synchronization to Reduce Error Rate in OFDM Using GNU Radio

C. Anjana, S. Sundaresan, Tessy Zacharia, R. Gandhiraj, K.P. Soman
2015 Procedia Computer Science  
In this paper, implementation of OFDM communication system with channel estimation and synchronization is carried out and the bit error rate (BER) of OFDM system with and without channel estimation is  ...  observed and correspondingly a plot is traced.  ...  Implementation of OFDM modulation and demodulation with Channel model In Physical layer, packets are used to break down the transmission in digital transceiver.  ... 
doi:10.1016/j.procs.2015.01.017 fatcat:tjzubfroxnhyfmdzjwtliawjmi

A Review on OFDM: Concept, Scope & its Applications

Manushree Bhardwaj
2012 IOSR Journal of Mechanical and Civil Engineering  
In wireless communication, concept of parallel transmission of symbols is used to achieve high throughput and better transmission quality.  ...  In this paper we will discuss the basics of OFDM techniques , role of OFDM in this era, its benefits and losses and also some of its application.  ...  This allows successful reconstruction of majority of them even without forward error correction.  ... 
doi:10.9790/1684-0110711 fatcat:sxj24x42ifcgppvci3fnww5fcu

Performance evaluation of OFDM based WiMAX (IEEE 802.16d) system under diverse channel conditions

Arun Agarwal, Kabita Agarwal
2015 2015 International Conference on Electrical, Electronics, Signals, Communication and Optimization (EESCO)  
Recently, OFDM has become the standard for physical layer implementation of various digital audio and video wireless communications such as DAB/DVB, wireless local access networks (WLANs) and wireless  ...  The results show that OFDM is well suited for high speed data transmission in mobile environment and channel coding combined with interleaving is mandatory for any wireless high speed transmission.  ...  Therefore, interleaving is widely used for burst error-correction. E.  ... 
doi:10.1109/eesco.2015.7253958 fatcat:avpu3lq2gjg3xb2xpvnwoxnblu

Physical Layer Development Framework for OsmocomBB

Harald Kröll, Stefan Zwicky, Benjamin Weber, Christian Benkeser, Qiuting Huang
2013 Journal of Signal Processing Systems  
The functionality of the system has been verified with a testbed comprising an OpenBTS base-station emulator, a receiver board with RF transceiver and our developed physical layer signal processing system  ...  This work has been presented at the SDR 2012 Wireless Innovation Forum Europe conference [1] . The open-source MatPHY framework is licensed under the GPLv3 license and can be downloaded at  ...  We thank ACP AG for providing us the IRIS305 single-chip RF transceiver for our testbed setup. In addition, we want to thank David Tschopp and  ... 
doi:10.1007/s11265-013-0762-2 fatcat:tzd3z3eqxre4nkqkue4b3okqre

Very High Bit Rate Near-Field Communication with Low-Interference Coils and Digital Single-Bit Sampling Transceivers for Biomedical Sensor Systems

Sebastian Stoecklin, Elias Rosch, Adnan Yousaf, Leonhard Reindl
2020 Sensors  
A novel transceiver design combines the approaches of a minimalistic analog front-end with a fully digital single-bit sampling demodulator, in which rectangular binary signals are processed by simple digital  ...  6.78 MBit/s with an energy consumption of just 646 pJ/bit in transmitting mode and of 364 pJ/bit in receiving mode at a bit error rate of 2×10−7, being 10 times more energy efficient than any commercial  ...  domain of single-bit sampling receivers: Low-power digital circuits discretize the analog data signal with respect to amplitude and time and demodulate the samples by applying digital operations of downconversion  ... 
doi:10.3390/s20216025 pmid:33114024 pmcid:PMC7660340 fatcat:65ljqkr435egngqjd5oiimvdhq

0.4 THz Photonic-Wireless Link With 106 Gb/s Single Channel Bitrate

Shi Jia, Xiaodan Pang, Oskars Ozolins, Xianbin Yu, Hao Hu, Jinlong Yu, Pengyu Guan, Francesco Da Ros, Sergei Popov, Gunnar Jacobsen, Michael Galili, Toshio Morioka (+2 others)
2018 Journal of Lightwave Technology  
The high throughput up to 106 Gbit/s within a single THz channel is enabled by combining spectrally efficient modulation format, ultra-broadband THz transceiver and advanced digital signal processing (  ...  However, most of recent demonstrations with over 100 Gbit/s data rates are based on spatial or frequency division multiplexing techniques, resulting in increased system's complexity and energy consumption  ...  160 GSa/s sampling rate and 63 GHz analog bandwidth, for analog-to-digital conversion, demodulation and communication performance analysis.  ... 
doi:10.1109/jlt.2017.2776320 fatcat:bbmpygzf6jgtzjmmqgvxl6vbqa

From WiFi to WiMAX: Techniques for High-Level IP Reuse across Different OFDM Protocols

Man Cheuk Ng, Muralidaran Vijayaraghavan, Nirav Dave, Arvind, Gopal Raghavan, Jamey Hicks
2007 2007 5th IEEE/ACM International Conference on Formal Methods and Models for Codesign (MEMOCODE 2007)  
Orthogonal Frequency-Division Multiplexing (OFDM) has become the preferred modulation scheme for both broadband and high bitrate digital wireless protocols because of its spectral efficiency and robustness  ...  Although the components and overall structure of different OFDM protocols are functionally similar, the characteristics of the environment for which a wireless protocol is designed often result in different  ...  FEC Encoder: Encodes data and adds redundancy to the bit stream to enable the receiver to detect and correct errors.  ... 
doi:10.1109/memcod.2007.371247 dblp:conf/memocode/NgVDARH07 fatcat:aqhpoxylljbrnaffdqkscs3izu

2019 Index IEEE Journal of Solid-State Circuits Vol. 54

2019 IEEE Journal of Solid-State Circuits  
A 30-GHz Digital Sub-Sampling Fractional-N PLL With −238.6-dB Jitter-Power Figure of Merit in 65-nm LP CMOS.  ...  ., +, JSSC June 2019 1755-1763 A 265-nW Fractional-N Digital PLL With Seamless Automatic Switching Sub-Sampling/Sampling Feedback Path and Duty-Cycled Frequency-Locked Loop in 65-nm CMOS.  ... 
doi:10.1109/jssc.2019.2956675 fatcat:laiuae7dtragjijttgfatsldmu

2020 Index IEEE Journal of Solid-State Circuits Vol. 55

2020 IEEE Journal of Solid-State Circuits  
., and Niknejad, A.M., A Low-Power 70-100-GHz Mixer-First RX Leveraging Frequency-Translational Feedback; JSSC Aug. 2020 2043-2054 Ishigaki, Y., see Yamada, Y., JSSC Jan. 2020 120-132 Ishii, H., see  ...  -2335 Ito, M., see Kondo, H., JSSC Jan. 2020 133-144 Iwai, T., see Fan, Y., JSSC Feb. 2020 439-451 J Jafarlou, S., see Nazari, P., JSSC Feb. 2020 282-297 Jahromi, S., Jansson, J., Keranen, P., and  ...  ., +, JSSC Sept. 2020 2387-2400 A 0.5-V Phase Error. Kim, K., +, JSSC Aug. 2020 2161-2173 A 0.65-V 12-16-GHz Sub-Sampling PLL With 56.4-fs rms Integrated Jitter and −256.4-dB FoM.  ... 
doi:10.1109/jssc.2021.3054535 fatcat:rfm7shuowvakfgzumgtqzlod5i

A Novel QAM Technique for High Order QAM Signaling

A. Ozen
2011 Radioengineering  
Simulated and experimental bit error rate (BER) performance analyses of the proposed technique in blind and non-blind equalizers are obtained by using single carrier (SC) WiMAX (IEEE 802.16-2004) radio  ...  equalizations to be embedded in a transceiver for the next generation communications.  ...  Acknowledgements The author would like to thank to Ismail Kaya, Kadir Türk and Oğuzhan Çakır of KTU DSP Lab. for their invaluable contributions, comments and suggestions on this paper.  ... 
doaj:1783612f01154c59ab0b8cefdc1e18f0 fatcat:6rn5y2au3bae3jf7hptqbwnepu

A dual input-channel software defined receiver platform for GSM WCDMA and Wi-Fi

Yang Zhong, Fredrik Tufvesson
2011 2011 International Conference on Wireless Communications and Signal Processing (WCSP)  
The receiver platform compatible with the GSM, WCDMA, and Wi-Fi standards can detect and identify the surrounding base stations and access points.  ...  It features wide frequency range, high adaptive sampling rate and especially dual phase coherent receiving channels synchronized both in frequency and time.  ...  Each input channel on the IF transceiver featuring 14-bit resolution has an ADC with a sampling capability up to 100 MSamples/s, and followed by a Digital Down Converter (DDC) with a maximum bandwidth  ... 
doi:10.1109/wcsp.2011.6096830 dblp:conf/wcsp/ZhongT11 fatcat:t7mhtmeab5bbtcdkqasae7b6yi
« Previous Showing results 1 — 15 out of 463 results