Yingtao Niu

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To improve the scientific and efficiency of anti-jamming communication system, this paper design an in anti-jamming communication decision engine based on Particle Swarm Optimization for multiple parameters selecting adaptively. The procedure of the proposed method is presented. Simulation is made in six models, the results show that the decision engine can(More)
In this paper, a simple downlink transmit scheme joint beamforming (BF) with space-time block coding (STBC) is proposed for cooperative base stations (BS). By deriving the equivalent signal-to-noise ratio (SNR) at the receiver, we first obtain the optimal BF weight vectors and the allocated power coefficients in terms of maximizing the statistical mutual(More)
HAPS has become a hot research issue due to low free space loss, low system investment and high flexible local coverage in recent years. The various frequency bands have been assigned for HAPS applications by International Telecommunication Union (ITU). The interference between HAPS and FSS is unavoidable because of the same frequency band and the overlap(More)
This paper proposes a method to accurately estimate sweeping spectrum range and the instantaneous frequency of the nonlinear chirp signal. Considering the lack of study in nonlinear chirp signal, we utilize SPWVD to analyze the non-linear chirp signal, then obtain the time-frequency distribution. The transferred results are utilized to estimate the sweeping(More)
The anti-jamming (AJ) effectiveness of the wireless communication equipment is influenced by the jammer and defender, it is necessary to consider the interaction of both sides respectively. To solve the problem of AJ effectiveness evaluation for the wireless communication equipment under different electromagnetic interference, a dynamic evaluation algorithm(More)
To estimate the wideband or multi-channel signals’ spectrum swiftly and exactly is a key technology to improve the performance of wideband spectrum sensing. The paper was proposed a novel spectrum estimation algorithm based on compressed sensing (CS) and multitaper method (MTM), which is called CS-MTM. The new algorithm was validated by single-tone,(More)
A novel fuzzy jamming recognition approach based on complexity measure of received signal is proposed. The proposed algorithm exploits the LZ complexity and box dimension of received signal as classified characters of jamming pattern. After the mean center and variance of each jamming pattern are calculated by some jamming samples, exponential fuzzy(More)
This paper introduces a low-cost HF/VHF interference signal generator's implementation which can generate several kinds of interference and communication signals. The overview of the signal generator is introduced first. Then some design and implementation details of the signal generator are illuminated. Finally, some test results of power spectrum density(More)
A novel blind multiple carrier frequency offset (multi-CFO) estimation algorithm is developed for distributed multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) systems over frequency-selective fading channels. In the algorithm, different multiple CFOs are estimated by cyclostationarity (CS) of the received signals and least(More)