frequency hopping
Column generation for frequency assignment in slow frequency hopping networks
... slow frequency hopping (SFH) is going beyond this one-to-one mapping and assigns multiple frequen- cies to each ...one frequency, but changes its trans- mitting frequency within a specific ...
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Design and Develop Wireless System Using Frequency Hopping Spread Spectrum
... spreading: frequency hopping and direct sequencing. This paper uses frequency hopping spread spectrum for wireless LAN because of the following ...
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Dual-Function MIMO Radar-Communications Employing Frequency-Hopping Chirp Waveforms
... interferences. Frequency-hopping chirp waveform proposed in this paper possesses the above properties, and in addition, it is simple to generate and immune to ...proposed frequency-hopping ...
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Low-Complexity Design of Frequency-Hopping Codes for MIMO Radar for Arbitrary Doppler
... 6.2. Related Discussion. For frequency-hopping waveforms, the parameters which can be controlled are - { M, Q, K, Δt, Δ f } . The proposed algorithm assumes one of these parameters K to be equal to MQ/2. ...
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Rectangular Ring Frequency Reconfigurable Micro Strip Antenna RRFRMSA for Frequency Hopping Wireless Networks and SDR
... The frequency diversity antennas are gaining attention to minimize the adverse effects caused by multipath signal propagation, increase the channel capacity by frequency reuse, minimize the disturbance of ...
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Slow Frequency Hopping Assisted MC DS CDMA using Large Area Synchronised Spreading Sequences
... 4 that the performance of SFH/CH LAS MC DS-CDMA invoking the LAS codes combined with CWCbased frequency hopping now exhibited a 4dB Eb/NO performance degradation in comparison to the sin[r] ...
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High Power VHF Frequency-Hopping Filters with High Suppression of Second Harmonic
... Abstract—A compact helix structure implementation and associated design formula of lumped element second-order bandpass filter circuit for high power frequency-hopping (FH) filter are proposed in this ...
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Density Fluctuation Measurements Using a Frequency Hopping Reflectometer in JT-60U
... elsewhere [13, and references therein]. A fundamental re- quirement of a Doppler reflectometer is the geometrical ar- rangement of the antenna against the cutoff density layer. In JT-60U, as described above, the plasma ...
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Unimodular sequence design under frequency hopping communication compatibility requirements
... Frequency hopping (FH) communication, as one kind of wireless communication modes, plays an important role in the field of military communications for its promi- nent anti-jamming ...the frequency ...
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Realization of Simplified Diversity Combining Algorithms for Fast Frequency Hopping System
... fast frequency hopping system, in order to achieve diversity, a symbol is required to repeat the transmission L times, reducing the probability of partial band ...detection frequency diversity, a ...
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Joint interference estimation and cancellation for coherent frequency hopping multiple access systems
... slow frequency hopping (SFH) systems in [9, 10] and ...slow frequency hopping/phase-shift keying (SFH/PSK) coher- ent synchronous frequency hopping system, and a feasible ...
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Network Sorting Algorithm for Multi frequency Hopping Signals with Adaptive SNR
... Based on the above issues, this paper put forward a SNR-adaptive sorting algorithm using the time-frequency (TF) sparsity of FH signal. Firstly, the hybrid frequency hopping signal is transformed by ...
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A Review on Frequency Hopping Spread Spectrum Based Anti Jamming Improvement With Encrypted Spreading Codes
... on Frequency hopping spread spectrum anti-jamming improvement with Encrypted spreading ...on frequency hopping spread spectrum modulation ...
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Reconstruction of extremely dense breast composition utilizing inverse scattering technique integrated with frequency hopping approach
... with Frequency- hopping approach applied is much closer to average value of the actual image compared to the reconstruction without Frequency-approach ...with Frequency-hopping approach ...
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Slow Frequency Hopping Multicarrier DS CDMA for Transmission over Nakagami Multipath Fading Channels
... posed frequency-hopping (FH) based multicarrier DS-CDMA (FH/MC DS-CDMA) [2], [3] arrangement, where no rigid spectral segmentation is required for the coexistence of various wireless ...
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Title: Frequency Hopping Based Performance Evaluation of TORA and OLSR Routing Protocols Using OPNET
... In this paper performance of OLSR and TORA is evaluated for metrics like Traffic Received, Traffic Sent, Network Load, Retransmission Attempts and Throughput by using 50 nodes scenario with IEEE 802.11 Frequency ...
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Frequency Hopping and Rate Adaptation Based Time Delayed Broadcast Scheme to Overcome Jamming Attacks
... literature, Frequency Hopping (FH) and Rate Adaptation (RA) have been separately used to mitigate ...of Frequency Hopping Spread Spectrum (FHSS) and Rate Adaptation is ...in frequency ...
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PWM Harmonic Signature Based Islanding Detection for a Single-Phase Inverter with PWM Frequency Hopping
... Abstract -- Distributed generation (DG) has gained popularity in recent years due to the increasing requirement for renewable power sources. A problem that exists with DG systems is the islanding of DG units that creates ...
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Diversity Combining for Fast Frequency Hopping Multiple Access Systems Subjected to Nakagami m Fading
... Abstract- The achievable performance of various diversity combining schemes used in fast frequency hopping FFH aided M-ary frequency shift keying MFSK systems operating in a multiple acc[r] ...
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Iterative Decoding and Soft Interference Cancellation in Fast Frequency Hopping Multiuser System Using Clipped Combining
... fast frequency hopping (FFH), M -ary frequency shift keying (MFSK) systems operating in a multiple access (MA) scenario [1], narrowband interference imposed by other users is the main source of ...
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