Performance analysis of bit error rate of data link system under pulse LFM interference in time-varying rayleigh channel

Zhao, Kui; He, Fangmin; Meng, Jin; Wu, Hao; Zhang, Lei

doi:10.1007/s11276-020-02251-0

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…The system user can use the models to calculate the number of co-siting radios or directly use the results in Tables 2 and 3 if their system parameters are similar to ours. If the system user expects a probability of no interference between co-site cognitive radios, the user can use the formula (7) with (12) to decide the optimal number of co-site radios. For example, if 0.96 is expected, then at most 8 radios can be used for concurrent communication in our scenario.…”

Section: Resultsmentioning

confidence: 99%

“…When multiple transceivers work simultaneously, there may produce various kinds of interference between each other [6][7][8][9], such as intermediate frequency interference, Hermitian image interference, and co-channel/adjacent channel interference [10] caused by transmitters. It may also produce harmonic interference, intermodulation interference [11], and cross-modulation interference caused by the nonlinear mixing in either transmitters or transceivers [12].…”

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confidence: 99%

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On optimal number of cognitive radios considering co-site electromagnetic compatibility

Liao

2021

J Wireless Com Network

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With the development and wide applications of wireless communication technology, the limited spectrum resources and the fixed spectrum allocation policy could no longer satisfy the demand for wireless communication. Just for this reason, many spectrum resources become spectrum holes because they are allocated but not used. Cognitive radio is now becoming one of the most important techniques for high utility of these spectrum holes. If the holes available to cognitive users are abundant over a certain time, it is a worth consideration to increase network throughputs by orthogonal multiplexing as many as spectrum holes. A multi-transceiver configuration is one of the possible solutions for this purpose. With such a schema, all transceivers within a cognitive user work in a concurrent or parallel mode, by which the throughput of the network can be increased. However, co-site working cognitive radios may incur electromagnetic interference between each other. When more cognitive radios are equipped, much electromagnetic interference may be incurred. Many techniques are proposed to mitigate such so-siting interference; however, none of them have addressed the probability that the interference will happen. If the probability could be estimated in advance, the user will make a better planning on the configurations of the co-siting working radios. Based on an elaborated n-fold multiple integral model, we propose a novel method to decide how many cognitive radios can be installed for one cognitive user at most. This is our main contribution with this work, providing an enhanced ability to determine the optimal number of cognitive radios installed within each cognitive user. We make a strict deduction on electromagnetic compatibility probability with various parameters of cognitive radios. Simulations are performed and the results show that the electromagnetic compatibility of the simulated cognitive radio system meets the deducted probability by this method very well.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

On optimal number of cognitive radios considering co-site electromagnetic compatibility

Liao

2021

J Wireless Com Network

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“…A natural representation space for chirps is the time-frequency plane and many queries connected to chirps here it is addressed from time-frequency angle. Authors in [3], discussed about the implementation of various digital MTI lters with video storage and cancellation with an advantage of freedom in choosing the inter-pulse period for moving-target indicator (MTI) radars. Authors in [9][10] discussed about the use of Direct Digital Chirp Synthesis (DDCS)…”

Section: Literature Reviewmentioning

confidence: 99%

Digital Pulse Compression: Linear Frequency Modulation Approach

Gowda

Siddesh

Anu³

et al. 2023

Preprint

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In radar system a challenging task is to achieve a good range resolution with a shorter pulse which needs more peak power. High peak power makes the design of transceivers complex because the devices used to build transceivers are able to withstand with high peak power. In literature pulse compression method is widely used to minimize the problem of using high peak power signal. In this paper, the problem of generating a high peak power signal with shorter duration, which is used to detect only moving targets has been addressed by proposing a novel radar pulse compression method using Linear Frequency Modulation with improved range resolution with a basic construction of a pulse processor which is analogous to a standard matched filter, and is reformed to suit an application. Multiple code types and lengths needed are used due to the flexibility in the design which reduce an uncertainties affected by the use of high pulse repetition frequencies.

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“…Spectrum performance and throughput: In OMA, like OFDMA, each user is assigned a specific frequency resource that affects the performance due to moderate, strong and weak channel state. At NOMA, the specific frequency band is allocated to many users simultaneously [3]. Therefore, frequency resource allocated to secondary user is also used by the primary user, and the interference can be minimized by SIC processes in the user recipients.…”

Section: Introductionmentioning

confidence: 99%

Implementation of NPS Precoding for Computational Complexity and PAPR Analysis of Uplink NOMA

Ajitha

Jaya²

2022

Preprint

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Future multimedia and entertainment services demand fast and massive connectivity simultaneously. NOMA is a promising candidate to achieve massive connectivity and high spectral efficiency for future interference less communications. However, new signal precoding problems need to be resolved for obtaining the complete advantages from NOMA technologies for future deployments of 5G/6G. Traditionally, DFT, cyclic shift and HT precoding techniques are utilized in NOMA for obtaining less PAPR and negligibly minimum errors. Choosing appropriate data resource block size is the main optimization problem in DFT precoding. Error correction in cyclic shift is more computationally complex which cannot be used in novel NOMA output system. Less energy compacting is the major disadvantage of HT transform. The proposed NOMA precoding technique utilizes Newman Phase Spread (NPS) concept with power domain superposition coding (SC) on transmitter. IFWFT and FWFT is used in time to frequency and vice versa to reduce the complexity of NPS based NOMA. This work differentiates moderate user from secondary and primary users. The proposed NPS gives the reduced PAPR value of nearly 5.2 dB which is comparatively low when compared to all other NOMA techniques.

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Performance analysis of bit error rate of data link system under pulse LFM interference in time-varying rayleigh channel

Cited by 6 publications

References 20 publications

On optimal number of cognitive radios considering co-site electromagnetic compatibility

On optimal number of cognitive radios considering co-site electromagnetic compatibility

Digital Pulse Compression: Linear Frequency Modulation Approach

Implementation of NPS Precoding for Computational Complexity and PAPR Analysis of Uplink NOMA

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