Receiver Design to Employ Simultaneous Wireless Information and Power Transmission with Joint CFO and Channel Estimation

Rajaram, A.; Dinis, Rui; Jayakody, Dushantha Nalin K.; Kumar, Neeraj

doi:10.1109/access.2018.2886297

Cited by 12 publications

(13 citation statements)

References 19 publications

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“…Note that the performance of the legitimate user is dependent on the perfect channel condition, which allows E1 and E2 to perform signal precoding using CSI. With the imperfect channel condition, the performance of R is dependent on a robust channel estimation technique as in [2,4]. The channel estimates of H E1R and H E2R are obtained by using training symbols from R to E1 and E2, respectively.…”

Section: System Modelmentioning

confidence: 99%

“…Thus, in order to keep up with the energy demands of the increasing number of network nodes, new radio frequency energy harvesting (EH) techniques like simultaneous wireless information and power transmission (SWIPT) are investigated for 5G networks [1][2][3]. Apart from harvesting energy by using SWIPT techniques, many other signal processing applications like channel estimation with SWIPT [4] and physical layer security (PLS) measures with the help of SWIPT technique were investigated in [5]. One of the most important techniques in improving PLS in a wiretap channel is using artificial noise (AN) in the communication channel to degrade the signal-to-noise plus interference ratio (SINR) of eavesdroppers; thereby improving the security of legitimate users [6].…”

Section: Introductionmentioning

confidence: 99%

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Secure Information Transmission with Self Jamming SWIPT

et al. 2020

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This article is focused on implementing simultaneous wireless information and power transmission as a physical layer security measure by using artificial noise. A series of high energy precoded symbols is simultaneously transmitted along with the information symbols over a Rayleigh frequency selective fading channel. The high energy precoded symbols act as an artificial noise for the eavesdroppers. The energy symbols are precoded on the basis of a legitimate user’s channel matrix to form a null space vector, which eliminates the interference of energy symbols at the information symbol receiver antennas, while allowing the rectenna to harvest energy from the superimposed information and energy symbols. We analyze the secrecy rate and error rate performance at the receiver under different circumstances, and we show that the performance of the legitimate user can be improved by using the iterative block decision feedback equalization method at the receiver.

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Section: System Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Secure Information Transmission with Self Jamming SWIPT

et al. 2020

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“…The mean CFO estimate is more accurate with the increase in the number of signal blocks. Compensate the CFO of Yk,l,i(Δf) with the mean CFO estimate value.Compute the average channel estimate over l blocks, and compute the information estimate using the average channel estimate.To improve the accuracy of the decoding process, the IB-DFE receiver was used to improve the information estimates, and again, the information estimates were recursively used to improve the channel estimate in a feedback loop, as in [37]. …”

Section: Case Study 3: Receiver Designing To Employ Swipt With Joimentioning

confidence: 99%

“…The CFO and channel estimation technique in this model were principally based on the superimposed signal as implemented in [34,37]. The error rate performance of this technique can be further improved by optimizing the ratio between Px and Pq based on the power of the pilot signal, information signal, and noise power at the receiver, as mentioned in [37]. The power of the pilot signal, information signal, and noise power at the receiver are denoted as ρq,ρx, and ρw, respectively.…”

Section: Case Study 3: Receiver Designing To Employ Swipt With Joimentioning

confidence: 99%

Novel SWIPT Schemes for 5G Wireless Networks

Rajaram

Khan

Tharranetharan

et al. 2019

Sensors

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In this paper, we present a few novel simultaneous wireless information and power transfer (SWIPT) schemes that can be effectively used in various 5G wireless network implementations. First, we study the possibility of integrating distributed energy beamforming with the data rate fairness beamforming in a cooperative communication system with multiple cooperative relays and multiple destination users communicating simultaneously. We show that the system exploits significant performance gain using such a joint energy and data rate fairness beamforming scheme. Further, we propose an enhanced version of the SWIPT scheme, the energy-efficient modulation-based non-orthogonal multiple access (M-NOMA) SWIPT scheme, and observe its system efficiency in terms of more harvested energy. Finally, we consider an energy-harvesting SWIPT scheme where the channel response is estimated using the energy-harvesting signal as pilots superimposed on the information signal. For such a scheme, we compute the optimum transmit power ratio between the pilot and information signals under varying SNR conditions and improve the accuracy of the decoding process at the reception.

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“…But, this algorithm requires a long synchronization sequence. 17,18 The length of the synchronization sequence of the VDB signal is only 48 bits, so its estimation accuracy is limited.…”

Section: Introductionmentioning

confidence: 99%

A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation system

Zhao

Zhang

Shi

et al. 2020

International Journal of Distributed Sensor Networks

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The augmentation navigation system based on multi-source information fusion can significantly improve position accuracy, and the multi-source information is usually transmitted through VHF Data Broadcast . Aiming at the burst characteristics of VHF Data Broadcast, this article proposed a novel demodulation algorithm based on open-loop structure. When a VHF Data Broadcast burst is detected, the timing recovery should be finished first, and the value of cross-correlation between the timing-recovered signal and the local training symbol is calculated to complete the frame synchronization. Then, the data-aided and non-data-aided algorithms are used to estimate the frequency offset. Finally, the phase offset is estimated and the carrier synchronization is accomplished. The simulation results demonstrate that the proposed algorithm can quickly accomplished carrier synchronization without using feedback-loop structure, and the bit error rate is less than 10−4 when the signal-to-noise ratio is greater than 17 dB, which satisfy the requirement of receiving VHF Data Broadcast signals in augmentation navigation system. Therefore, the proposed algorithm can be used for receiving VHF Data Broadcast signals.

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Receiver Design to Employ Simultaneous Wireless Information and Power Transmission with Joint CFO and Channel Estimation

Cited by 12 publications

References 19 publications

Secure Information Transmission with Self Jamming SWIPT

Secure Information Transmission with Self Jamming SWIPT

Novel SWIPT Schemes for 5G Wireless Networks

A novel demodulation algorithm for VHF Data Broadcast signals in multi-sources augmentation navigation system

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