Multicarrier constant envelope OFDM signal design for radar applications

Mohseni, Reza Moosavi; Sheikhi, A.; Masnadi-Shirazi, Mohammad Ali

doi:10.1016/j.aeue.2009.10.008

Cited by 27 publications

(13 citation statements)

References 15 publications

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“…In this section, we test the new obtained expression for the SER (10) for the = 2 and = 8 case with DFT length of DFT = 8, 32, 64 for a wide range of / 0 values. The results are compared with those obtained from (7) and with Figure 4: SER comparison as a function of / 0 between the simulated, new proposed expression (10) and the expression proposed by [5] given in (7). DFT = 64, ℎ = 0.5/2 , = 2, modulation type: = 8.…”

Section: Simulationmentioning

confidence: 98%

“…In the following, we denote the expression given in (7) as "Article Expression" and our new obtained expression for the SER (10) as "New Expression. " Figures 2, 3, 4, 5, and 6 show the performance comparison of the SER as a function of / 0 between our expression for the SER (10), the expression given in (7), and the simulated Figure 6: SER comparison as a function of / 0 between the simulated, new proposed expression (10) and the expression proposed by [5] given in (7). DFT = 8, ℎ = 0.1/2 , = 2, modulation type: = 8.…”

Section: Symbol Error Ratementioning

confidence: 99%

“…The occurrence of these peaks seriously hampers practical implementations and is generally considered as one of the major drawbacks of OFDM [4]. Recently [5][6][7][8], the constant envelope OFDM (CE-OFDM) was proposed for solving the PAPR problem associated with OFDM. CE-OFDM transforms the OFDM signal, by way of phase modulation, to a signal designed for efficient power amplification [5].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Systematic Approach for Calculating the Symbol Error Rate for the Entire Range of above and below the Threshold Point for the CE-OFDM System

Pinchas¹,

Pinhasi²

2013

Mathematical Problems in Engineering

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Recently, the performance of the constant envelope OFDM (CE-OFDM) was analyzed in additive white Gaussian noise (AWGN) with the help of a closed-form approximated expression for the symbol error rate (SER). This expression was obtained with the assumption of having a high carrier-to-noise ratio (CNR) which, in effect, linearized the phase demodulator (the phase demodulator was implemented with an arctangent calculator) and simplified the analysis. Thus, this expression is not accurate for the lower range of CNR. As a matter of fact, it was already observed that there is a threshold point from which the simulated SER result vanishes from the theoretically obtained expression. In this paper, we present a systematic approach for calculating the SER without assuming having the high CNR case or using linearization techniques. In other words, we derive the SER for the nonlinear case. As a byproduct, we obtain a new closed-form approximated expression for the SER based on the Laplace integral method and the Edgeworth expansion. Simulation results indicate that the simulated results and those obtained from the new derived expression are very close for the entire range of bit energy-to-noise density ratio () above and below the threshold point.

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Section: Simulationmentioning

confidence: 98%

Section: Symbol Error Ratementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Systematic Approach for Calculating the Symbol Error Rate for the Entire Range of above and below the Threshold Point for the CE-OFDM System

Pinchas¹,

Pinhasi²

2013

Mathematical Problems in Engineering

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“…Recently, the constant envelope OFDM (CE-OFDM) was proposed for solving the high PAPR problem associated with OFDM [14]- [16]. In CE-OFDM the OFDM signal is transformed to a constant envelope waveform by utilization of angle modulation.…”

Section: Introductionmentioning

confidence: 99%

Constant Envelope Phase Modulation Inspired by Orthogonal Waveforms

2016

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Constant envelope orthogonal frequency division multiplexing (CE-OFDM) is a technique to modify the OFDM signal with high peak-to-average power ratio (PAPR) to a constant envelope zero decibel PAPR waveform. The conventional CE-OFDM uses inverse discrete Fourier transform to calculate the signal time samples before feeding them to the phase modulator. This letter describes a different approach for the implementation of a constant envelope of generating phase digitally modulated waveforms that may be easier for implementation. The new approach, which we termed "constant envelope M-ary time orthogonal" (CE-MTO), is based on orthogonal waveforms in the time domain. A time domain-analytical study of the CE-MTO in the presence of an additive white Gaussian noise is presented. Simulations of the CE-MTO performances show the comparable results to those of the CE-OFDM technique also in a frequency selective channel.

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“…2, the phase of the sine signal varies linearly with time [4][5][6][7]. Therefore, we can get time t from the given phaseϕ through That is how phase ambiguity exists.…”

Section: B Ranging Principlementioning

confidence: 99%

Data Processing and Analysis Method of NLOS Ranging Radar System

Huixian¹,

Zheng²,

Luo³

et al. 2013

Proceedings of the 2nd International Conference on Computer Science and Electronics Engineering (ICCSEE 2013)

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Abstract-We address the problem of precise ranging between trains in non-line-of-sight (NLOS) environment using a NLOS (Non Line of Sight) ranging radar. By calculating the phase delay of the received and transmitted OFDM (Orthogonal Frequency Division Multiplexing) waveform, we achieve the target of ranging in NLOS environment. Then, we compare several different data processing methods and prefer equal mean value weighted coefficient method. In addition, we analyze the ranging error according to the characteristics of the AWGN channel, thereby providing a theoretical basis for the development of the OFDM waveform phase ranging system.

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Multicarrier constant envelope OFDM signal design for radar applications

Cited by 27 publications

References 15 publications

A Systematic Approach for Calculating the Symbol Error Rate for the Entire Range of above and below the Threshold Point for the CE-OFDM System

A Systematic Approach for Calculating the Symbol Error Rate for the Entire Range of above and below the Threshold Point for the CE-OFDM System

Constant Envelope Phase Modulation Inspired by Orthogonal Waveforms

Data Processing and Analysis Method of NLOS Ranging Radar System

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