BER Performance Evaluation and PSD Analysis of Non-Coherent Hybrid MQAM-LFSK OFDM Transmission System

Latif, Asma; Gohar, N.D.

doi:10.1109/icet.2006.335926

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…Figure 4 offers effect P on BER performance of suggested style. OFDM receiver could realize big hesitancy variety for P [28]. In Figure 4, studying effect of numeral of routes on BER performance, with regard to P equal four, P equal eight, for Ns equal five hundred twelve and Γ equal eight, beneath Figure 4 appears, the suggested TSFE style attains total frequency variety if Γ equal P with regard to fd equal zero herts and fd equal eighty hertz.…”

Section: The Proposed System Simulation Results and Discussionmentioning

confidence: 96%

Design of encrypted transceiver Non-coherent OFDM with ability to correct coding bits of information

Thajeel

Abboud

Kunbar

2019

IJECE

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<p>A differential encrypted transceiver was designed in the signal-to-noise ratio systems. A time"-"spread" frequency-"encoded (TSFE) algorithm was proposed using the orthogonal frequency multiplexing multiplier OFDM. The proposed design was verified under the Doppler frequency effect and there was an improvement in the performance of the signal-to-noise ratio system. As a result, the reliability of decoded data was increased and achieves the ability to correct coding bits of information.</p>

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Section: The Proposed System Simulation Results and Discussionmentioning

confidence: 96%

Design of encrypted transceiver Non-coherent OFDM with ability to correct coding bits of information

Thajeel

Abboud

Kunbar

2019

IJECE

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“…Furthermore, a CM system employing (M F , M Q ; w, g)-MFQAM with 1 ≤ g < w is observed to be robust against channel estimation errors, contrary to a CM system employing FSK, QAM, FQAM, or (M F , M Q ; w, g)-MFQAM with g = w, due to its frequency diversity. For example, compared with the case of perfect channel estimation, a CM system employing (16,4 …”

Section: Fer Performance In the 3gpp Lte Systemmentioning

confidence: 99%

“…To achieve high bandwidth efficiency as well as to keep highly power efficient, a modulation scheme combining quadrature‐amplitude modulation (QAM) with FSK, called frequency and quadrature‐amplitude modulation (FQAM), was proposed in [2] for the first time and was further extended in [3]. In [4, 5], the performance of FQAM in an orthogonal frequency‐division multiplexing (OFDM) system was analysed over AWGN and Rayleigh fading channels. Recently, the normalised throughput of a coded modulation (CM) system employing FQAM over AWGN channels was observed in [6, 7] to be very close to the channel capacity limit in the low signal‐to‐noise ratio (SNR) region, contrary to a CM system employing either FSK or QAM.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the normalised throughput of a coded modulation (CM) system employing FQAM over AWGN channels was observed in [6, 7] to be very close to the channel capacity limit in the low signal‐to‐noise ratio (SNR) region, contrary to a CM system employing either FSK or QAM. The results in [2–7] indicate the significance and the availability of FQAM over AWGN channels. However, the normalised throughput of a CM system employing FQAM over Rayleigh fading channels is far away from the channel capacity limit, although it is higher than that employing FSK.…”

Section: Introductionmentioning

confidence: 99%

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Performance of multitone‐frequency and quadrature‐amplitude modulation over Rayleigh fading channels

et al. 2015

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Multitone-frequency and quadrature-amplitude modulation (MFQAM) is a combination of multitone frequencyshift keying and quadrature-amplitude modulation (QAM). In this study, the authors consider MFQAM with active subcarriers grouped in balance, where the active subcarriers are divided into a specified number of groups and the same QAM symbol is conveyed by every subcarrier in each group. This grouping may make MFQAM have frequency diversity in itself. They first derive the joint probability density function of the correlator outputs of an MFQAM receiver. They then compute the channel capacity of a coded modulation (CM) system employing MFQAM over Rayleigh fading channels. As a result, they demonstrate that for a moderate code rate between 1/3 and 2/3, its normalised throughput is close to the channel capacity limit in the low signal-to-noise ratio region, contrary to a CM system employing the conventional modulation. They also evaluate the frame error rate (FER) performance of a CM system employing MFQAM when a non-binary error-correcting code is employed. Numerical results demonstrate that the normalised throughput of the CM system computed via the FER shows a similar trend to that obtained via the channel capacity.

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Efficiency improvement using adaptive hybrid modulation/coding/frequency selection scheme for future 5G wireless network

Ashour

ElAttar

Dahab

2017

2017 IEEE 17th International Conference on Communication Technology (ICCT)

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BER Performance Evaluation and PSD Analysis of Non-Coherent Hybrid MQAM-LFSK OFDM Transmission System

Cited by 3 publications

References 7 publications

Design of encrypted transceiver Non-coherent OFDM with ability to correct coding bits of information

Design of encrypted transceiver Non-coherent OFDM with ability to correct coding bits of information

Performance of multitone‐frequency and quadrature‐amplitude modulation over Rayleigh fading channels

Efficiency improvement using adaptive hybrid modulation/coding/frequency selection scheme for future 5G wireless network

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