high-frequency wireless communications
A Study on the Application of LTE System for High -speed Maritime Wireless Communications
... the frequency band allocated to use for mission and non-use is different according to the frequency distribution situation or situation of the countries, and many international discussions are needed to ...
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Adaptive Multicarrier Modulation: A Convenient Framework for Time Frequency Processing in Wireless Communications
... no frequency synchronization. It can be seen that the uncorrected frequency errors result in heavy in- tersubcarrier interference, which manifests itself as a high residual BER of about 5% for BPSK ...
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Performance Improvement of Wireless Communications Using Frequency Hopping Spread Spectrum
... in wireless networks and a technique to generate spread spectrum by hopping the carrier fre- quency FHSS uses narrow band signal which is less than 1 MHz, In this method data signal is modulated with a narrowband ...
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Frequency Diverse Array Using Butler Matrix for Secure Wireless Communications.
... Directional modulation (DM) is a promising physical-layer security technique for wireless communications [1]. The fundamental concept behind DM implies that the modulation takes place at antenna level, ...
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Numerical methods for the high speed solution of integral equations in wireless communications
... or frequency of the perturbations or both is mirrored by the results obtained for tilt field coverage, but as with the smooth profile itself, the field results for the smooth profik remain the ...
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Training sequence based frequency domain channel estimation for indoor diffuse wireless optical communications
... radio frequency communica- tions with the traditional infrared communications ...radio frequency and infrared counterparts, such as security at the physical level, high-data-rate, ...
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Low Complexity Turbo Equalization for High Data Rate Wireless Communications
... Soft interference cancellers (SICs) have been proposed in the literature as a means for reducing the computational complexity of the so-called turbo equalization receiver architecture. Soft-input-soft output (SISO) ...
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High resolution integrated passive phase shifters for future wireless communications
... A comparison of state-of-the-art published works and products is given in Table 9.1. In comparison with the silicon based circuits, our designs are larger, but provide higher resolution and power handling. Paper [37] ...
148
Ultra Wide Bandwidth High Gain Vivaldi Antenna for Wireless Communications
... Abstract—In this paper an ultrawide bandwidth double-layered Vivaldi antenna (DLVA) integrated in Radome housing is proposed. First the conventional Vivaldi antenna is designed with bandwidth extended from 1.8 to 6 GHz ...
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Robust frequency-domain turbo equalization for multiple-input multiple-output (MIMO) wireless communications
... carrier frequency offsets (CFOs) in MIMO systems can be troublesome for single carrier frequency-domain equalization if the discrete Fourier transform block size is large and/or the constellation size of ...
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A Novel Low Computational Complexity Multiple Signal Representation Technique for PAPR Reduction in OFDM Systems
... Orthogonal Frequency Division Multiplexing (OFDM) while being an efficient scheme for high data rate wireless communications has drawbacks such as higher Peak-to-Average Power Ratio ...
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Efficient Mobile Uplink LTE System Using Scfdma and Biorthogonal Wavelets
... Carrier Frequency Division Multiple Access (SC-FDMA) is an attractive technology for uplink broadband wireless communications, because it does not have the problems of Orthogonal Frequency ...
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Fast compression of OFDM channel state information with constant frequency sinusoidal approximation
... According to our theoretical findings, the CSI can be approximated as the linear combination of the base sinu- soids. The coefficients of the base sinusoids in the lin- ear combination can be found by minimizing the fit ...
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Towards Efficient Mobile M2M Communications: Survey and Open Challenges
... M2M communications are expected to revolutionize telecommunication operators’ business due to emergence of new networked applications, which will attract new clients and increase the data flowing in their ...
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Analysis and Approach for Key Technique Based on THz Wireless Transmission
... the wireless technology rapid development, the demand for spectral resource becomes ...The wireless frequency steps toward higher terahertz band which has become one hot point in the research ...THz ...
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Frequency domain subcarrier diversity receiver for discrete Hartley transform OFDM systems
... in frequency-selective fading channels, the authors in [18] proposed a computationally efficient DHT-OFDM scheme using a one-level butterfly structure, and a simple single-tap equalizer can then be used to recover ...
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Wireless Vehicular Communications
... conditions or due to equipment failure. Instead, we focus on adversarial behavior, which can cause a much larger set of faults. We do not dwell on individual VC protocols for which to describe attacks. Rather, we survey ...
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Maximizing the stable throughput of high priority traffic for wireless cyber physical systems
... In wireless cyber-physical systems, more and more data will be transmitted over wireless networks such as ...supporting wireless CPS applications, in this paper, we study the maximum stable ...
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Multicarrier DS CDMA: A Multiple Access Scheme for Ubiquitous Broadband Wireless Communications
... Multiuser detection (MUD) is a highly efficient detection technique, which is capable of attain- ing near-single-user performance, while support- ing a multiplicity of users and hence increasing the user capacity of ...
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Impact of receiver field of view on underwater optical wireless communications
... where a( ) is the absorption coefficient and b( ) is the scattering coefficient. It can be seen from eq. (1) that the BL Law only considers attenuation due to absorption and scattering and does not consider any ...
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