EHF for Satellite Communications: The New Broadband Frontier

Cianca, Ernestina; Rossi, T.; Yahalom, Asher; Pinhasi, Y.; Farserotu, J.; Sacchi, Claudio

doi:10.1109/jproc.2011.2158765

Cited by 126 publications

(43 citation statements)

References 70 publications

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“…Current high-throughput satellite (HTS) systems for broadband-distributed user access are designed following two main concepts: The use of Ka-band radio frequency (RF) links both for the forward and for the return link; The use of multispot coverage: this technique is largely applied to increase the system throughput through frequency reuse and system reconfigurability [1]. While with the exploitation of extremely high-frequency (EHF) bands (30-300 GHz) for broadband transmission over satellite links, the Q-V band (30-50 GHz) and W-band (75-110 GHz) seem to offer very promising perspectives [2]. This paper use Ka-band as the operating frequency band for satellite communication because of the advantages of the wideband, little disturbance, and small-sized terminals [3].…”

Section: Introductionmentioning

confidence: 99%

Data-Aided and Non-Data-Aided SNR Estimators for CPM Signals in Ka-Band Satellite Communications

2017

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Adaptive coded and modulation (ACM) is an effective measure to resist rain attenuation in Ka-band satellite communications. The accuracy of the estimator for signal-to-noise ratio (SNR) is one of the main factors that affect ACM performance. This paper establishes the channel model of satellite communication in Ka-band and derives and analyzes data-aided (DA) maximum likelihood (ML) and method-of-moments estimators for SNR of continuous phase modulation (CPM) in Ka-band fading channel. Simulations and analysis indicate that the normalized mean square error (NMSE) of the DA ML estimator is closer to the Cramer-Rao bounds (CRB) at low SNR, but the performance worsens with the SNR increases from medium to high values. The M 2 M 4 estimator performs poorly at low SNR and best at medium SNR. When the SNR is low, the performance of the DA ML estimator is better than the M 2 M 4 estimator; however, the two estimators have similar performance when SNR is high. The performances of the two estimators will become increasingly better the greater the lengths of the observation signals become. However, the influence of the signal length will become increasingly smaller as the SNR becomes larger.

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Section: Introductionmentioning

confidence: 99%

Data-Aided and Non-Data-Aided SNR Estimators for CPM Signals in Ka-Band Satellite Communications

2017

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“…The stringent requirements in terms of increased power efficiency would require that the power amplifier be operated very close to the saturation point, in particular when broadband satellite applications beyond Ka-band are considered [6]. Due to their high envelope fluctuations, OFDM and OFDMA waveforms are severely affected by the non-linear amplifier characteristic and would require a large input back off (IBO) to achieve acceptable performance.…”

Section: Introductionmentioning

confidence: 99%

“…It is known that high-frequency satellite oscillators are characterized by high phase noise, as clearly stated in [6]. On the other hand, low phase noise RF components are very expensive and their cost increases with the operational frequency.…”

Section: Introductionmentioning

confidence: 99%

Analysis and assessment of the effects of phase noise in constant envelope multicarrier satellite transmissions

Sacchi

Cianca

Rossi

et al. 2015

2015 IEEE International Conference on Communications (ICC)

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Constant-Envelope (CE) multicarrier techniqueshave been recently proposed in order to enable the use of multicarrier waveforms in channels characterized by severe nonlinear distortions. They are based on a phase modulation applied to the multicarrier signal, generated in the time domain by means of a real-valued DFT. Such techniques, known as CE-OFDM and CE-SC-FDMA, demonstrated their superior performance with respect to conventional OFDMA and SC-FDMA, when applied to nonlinear satellite channels, at the price of reduced spectral efficiency. An open issue still to be evaluated is related to the impact of phase noise on the performance of CE multicarrier systems. This is especially important in view of the use of EHF bands for broadband satellite communications. This paper aims at analyzing the effects of phase noise on CE-OFDM and CE-SC-FDMA, highlighting the different behavior of conventional and CE multicarrier signals in the presence of such impairment. Then, simulation results will be discussed considering two different phase noise masks. The performed analysis demonstrates that CE multicarrier signals have globally better performance when both phase noise and nonlinear distortions are considered. Moreover, the sensitivity to the phase noise is strongly dependent from the modulation order and the angular modulation index.

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“…This is primarily driven by the advent of data hungry applications such as broadband internet, and video conferencing as well as the congestion in the lower frequency bands [1]. The exploitation of EHF bands in satellite communications may offer several advantages like broad bandwidth, low transmission power, low probability of interception (due to narrow antenna beamwidth, and reduced payload mass [2]).…”

Section: Introductionmentioning

confidence: 99%

System design of a Q-band satellite beacon for propagation experiments over Indian region

Gangele

Buch

Bera

et al. 2013

IEEE MTT-S International Microwave and RF Conference

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This paper presents the system dimensioning of a Q-band downlink satellite beacon providing coverage over the Indian region. The paper addresses the tradeoff analysis associated in the design process to meet the conflicting requirements of optimization of payload mass/power, beacon availability and user terminal size. The design is optimized to facilitate the collection of propagation data over diverse geographical regions using small ground terminals (~1m) with an average availability about 99.5%.Index Terms -Q/V Band, Millimeter wave, satellite communication, beacon, rain fade, FMT

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EHF for Satellite Communications: The New Broadband Frontier

Cited by 126 publications

References 70 publications

Data-Aided and Non-Data-Aided SNR Estimators for CPM Signals in Ka-Band Satellite Communications

Data-Aided and Non-Data-Aided SNR Estimators for CPM Signals in Ka-Band Satellite Communications

Analysis and assessment of the effects of phase noise in constant envelope multicarrier satellite transmissions

System design of a Q-band satellite beacon for propagation experiments over Indian region

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