Integrated navigation and communication system based on OFDM

Díez, José Raúl Fernández del Castillo; Castro, David; Palomo, J. M.; Tossaint, Michel

doi:10.1109/navitec.2010.5707995

Cited by 12 publications

(6 citation statements)

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“…An OFDM signal splits a high-rate data stream into N complex parallel lower rate streams transmitted simultaneously over N orthogonal narrowband subcarriers, each carries one symbol (Serant et al 2010;Thevenon et al 2009;Proakis 2008;Diez et al 2010). Figure 2 describes the OFDM modulation.…”

Section: Signal Modelsmentioning

confidence: 99%

Performance evaluation of MSK and OFDM modulations for future GNSS signals

et al. 2014

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The objective of this work is to investigate the performances of orthogonal frequency division multiplexing (OFDM) and minimum frequency shift keying (MSK) modulations as potential future global navigation satellite systems (GNSS) signal modulation schemes. MSK is used in global system for mobile communications because of its spectral efficiency, while OFDM is used in WLAN and digital video broadcast-terrestrial because of its multipath mitigation capability. These advantages of MSK and OFDM modulations render them as promising modulation candidates for future GNSS signals to offer enhanced performances in challenging environments. Gabor bandwidth and multipath error envelopes of these two modulations were computed and compared with those of the current global positioning system (GPS), Galileo, and Beidou signal modulations. The results show that OFDM modulation demonstrated promises as a viable future GNSS modulation, especially for signals that require pre-filtering bandwidths larger than 2 MHz, while MSK modulation is more desirable for pre-filtering bandwidth below 2 MHz where it exhibits the largest Gabor bandwidth.

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Section: Signal Modelsmentioning

confidence: 99%

Performance evaluation of MSK and OFDM modulations for future GNSS signals

et al. 2014

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“…Orthogonal frequency-division multiplexing (OFDM) is the most popular MCM technique used in wireless and cellular communications. OFDM is preferable in point-to-point communication as well as unmanned aerial vehicle UAV wireless communications [4] because it can be implemented with the least amount of complexity [5]. However, it has a number of challenges, such as low spectral efficiency and significant out-of-band emissions [6].…”

Section: Introductionmentioning

confidence: 99%

Filter bank multi-carrier based offset ternary phase shift keying(FBMC/OTPSK)

mohamed,

Nagy,

Abdelaziz

2023

J. Phys.: Conf. Ser.

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Filter bank multi-carrier (FBMC) is a popular researched technique for wireless communications that offers several advantages over traditional orthogonal frequency-division multiplexing (OFDM) systems. In this paper, we propose a FBMC system using offset Triangle phase shift keying (TPSK) modulation (FBMC/OTPSK), analyze its bit error rate (BER) performance via additive white Gaussian noise (AWGN) channel, and compare it to that of conventional FBMC using offset quadrature amplitude modulation (FBMC/OQAM) system. Simulation results show that the proposed FBMC/OTPSK system considerably improves BER performance over FBMC/OQAM system. Additionally, we explore the impact of using ternary convolutional coding (TCC) with TPSK and binary convolutional coding (BCC) with QAM. The presented TPSK modulation encoded by TCC offers better error rate performance and minimum amplitude fluctuation compared to QAM encoded by BCC; therefore, TCC-coded OTPSK is proposed to be used with FBMC instead of BCC-coded OQAM to benefit from its lower error rates without bandwidth expansion, as well increase information carried by symbol, hence increases throughput.

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“…However, this only considers the transmission of navigation messages, and it cannot be used in satellite communication systems. Diez J. et al [11] developed an integrated navigation and communication system based OFDM modulation. However, this is only for special occasion.…”

Section: Introductionmentioning

confidence: 99%

LEO-Augmented GNSS Based on Communication Navigation Integrated Signal

Wang

Lü

Tang

et al. 2019

Sensors

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Low Earth Orbit (LEO) is of great benefit for the positioning performance of Global Navigation Satellite System (GNSS). To realize the system of LEO-augmented GNSS, three methods to integrate communication and navigation signal for LEO communication system with the least influence on the communication performance are analyzed. The analysis adopts the parameters of IRIDIUM signal as restrictions. This paper gives quantitative comparison of these methods considering CN0(carrier noise power spectral density rate) margin, pseudorange accuracy, Doppler accuracy, and communication loss. For method 1, a low-power navigation signal is added to the communication signal. For method 2, the navigation signal is launched in one or more frames. For method 3, the navigation signal is launched in the frequency band separated to the communication signal. The result shows that the pseudorange accuracy of method 2 is far below method 1 and method 3. However, the difference of Doppler accuracy among the three methods can be emitted. Detailed analysis shows that method 1 is practicable when the communication and navigation signal power rate is 15 dB. It achieves the balance of pseudorange accuracy and bit error rate (BER) performance under this condition. Comprehensive comparison of these methods is given in the last. The result shows that the CN0 margin of the navigation signal for method 3 can be 13.04 dB higher than method 1, based on the accuracy threshold considered in this paper. Methods 1 and 3 have the advantage of high accuracy and high CN0 margin respectively. However, method 3 causes high communication capacity loss. Considering that the main disadvantage of GNSS signals is low CN0, method 3 is a good choice for the LEO-augmented GNSS system. Methods 1 and 3 can be combined to realize both high accuracy and high CN0 margin if possible.

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Integrated navigation and communication system based on OFDM

Cited by 12 publications

References 0 publications

Performance evaluation of MSK and OFDM modulations for future GNSS signals

Performance evaluation of MSK and OFDM modulations for future GNSS signals

Filter bank multi-carrier based offset ternary phase shift keying(FBMC/OTPSK)

LEO-Augmented GNSS Based on Communication Navigation Integrated Signal

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