A 0.5-to-3GHz Full-Duplex Receiver with 27dB Self-Interference-Cancellation

Wang, Chuangguo; Li, Wei; Wang, Tao; He, Lai

doi:10.1109/iscas45731.2020.9180469

Cited by 5 publications

(5 citation statements)

References 7 publications

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“…Thus, a neutralized single-ended mixer is utilized for suppressing LO feedthrough in this work, and the circuit details are shown in Fig. 11(a) [73]. It saves power consumption and chip area compared with the differential mixer.…”

Section: F Neutralized Mixer For Lo Feedthrough Suppressionmentioning

confidence: 99%

A Sub-THz Full-Duplex Phased-Array Transceiver With Self-Interference Cancellation and LO Feedthrough Suppression

Wang,

Abdo,

Liu

et al. 2024

IEEE J. Solid-State Circuits

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A sub-THz (88-136 GHz) full-duplex (FD) phasedarray transceiver (TRX) integrating an RF self-interference (SI) canceller with differential feeding FD antennas is presented in this work. The LO phase generation chain controls differential transmitter outputs for the phased-array operation. The differential feeding FD antenna with differential pairs of chips achieves over 35-dB SI suppression. The SI suppression is improved by 20 dB when the SI canceller is turned on. Without any digital-domain SI cancellation (SIC), a total SI suppression of >60 dB is achieved over a 2-GHz bandwidth. The proposed neutralized mixer with over 20-dB LO feedthrough suppression and wideband RF amplifiers support a large data rate at sub-THz frequencies. This is the world's first demonstrated sub-THz FD phased-array TRX. In the over-the-air (OTA) measurements for FD mode, the proposed FD TRX achieves 6 Gb/s in 8PSK and 4 Gb/s in 16QAM. It also achieves a 112-Gb/s data rate for OTA TX-to-RX.

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Section: F Neutralized Mixer For Lo Feedthrough Suppressionmentioning

confidence: 99%

A Sub-THz Full-Duplex Phased-Array Transceiver With Self-Interference Cancellation and LO Feedthrough Suppression

Wang,

Abdo,

Liu

et al. 2024

IEEE J. Solid-State Circuits

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“…Therefore, as a possible candidate technology for next generation wireless communication systems, there are many research groups focusing on the realization of FD systems [5][6][7][8][9][10][11][12][13][14], or designing communication techniques for different wireless communication systems based on FD system assumptions [15][16][17][18][19][20][21][22][23][24][25]. For example, in [6], the research group implements a prototype of IBFD system, which is a very famous prototype research of the IBFD system.…”

Section: Introductionmentioning

confidence: 99%

“…For example in [5], the authors provide design ideas with SI cancellation effect for IBFD systems. In [8][9][10][11][12][13], the analog circuit (AC) design ideas and implementations for IBFD systems with SI cancellation function are provided. For digital processing of SI cancellation, in [6] the authors investigate the characteristics of the residual SI after the AC part and implement a fixed-type digital filter to handle it.…”

Section: Introductionmentioning

confidence: 99%

Implementation of In-Band Full-Duplex Using Software Defined Radio with Adaptive Filter-Based Self-Interference Cancellation

Liao,

Zhao,

et al. 2023

Future Internet

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For next generation wireless communication systems, high throughput, low latency, and large user accommodation are popular and important required characteristics. To achieve these requirements for next generation wireless communication systems, an in-band full-duplex (IBFD) communication system is one of the possible candidate technologies. However, to realize IBFD systems, there is an essential problem that there exists a large self-interference (SI) due to the simultaneous signal transmission and reception in the IBFD systems. Therefore, to implement the IBFD system, it is necessary to realize a series of effective SI cancellation processes. In this study, we implemented a prototype of SI cancellation processes with our designed antenna, analog circuit, and digital cancellation function using an adaptive filter. For system implementation, we introduce software-defined radio (SDR) devices in this study. By using SDR devices, which can be customized by users, the evaluations of complicated wireless access systems like IBFD can be realized easily. Besides the validation stage of system practicality, the system development can be more effective by using SDR devices. Therefore, we utilize SDR devices to implement the proposed IBFD system and conduct experiments to evaluate its performance. The results show that the SI cancellation effect can reach nearly 100 dB with 10−3 order bit error rate (BER) after signal demodulation. From the experiment results, it can be seen obviously that the implemented prototype can effectively cancel the large amount of SI and obtain satisfied digital demodulation results, which validates the effectiveness of the developed system.

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“…In the FD relaying networks, the relays receive and forward data over the common frequency band at the same time. Moreover, the bandwidth efficiency is improved whereas the self‐loop interference, which is the main drawback for the FD networks should be mitigated 3 . Some methods are proposed for self‐loop interference cancelation such as employing directional antennas 4 .…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the bandwidth efficiency is improved whereas the self-loop interference, which is the main drawback for the FD networks should be mitigated. 3 Some methods are proposed for self-loop interference cancelation such as employing directional antennas. 4 However, because of the imperfect cancelation, interference cannot completely be removed.…”

Section: Introductionmentioning

confidence: 99%

Diversity achieving full‐duplex DF relaying with joint relay‐antenna selection under Nakagami‐m fading environment

Gilan

Maham

2022

Int J Communication

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One of the main imperfections degrading the performance of full-duplex (FD) relaying systems is the outage floor. In this work, a power scaling method is proposed, which overcomes this effect even when there does not exist a direct channel between source and destination nodes. The system is composed of K decode-and-forward (DF) FD relays over the Nakagami-m fading environment. To promote system performance, joint antenna and relay selection methods are employed in the FD relaying systems. Each FD relay is equipped with multiple antennas for receiving and the other for transmitting the information. The transmitting and receiving antennas are chosen based on the instantaneous channel variations, and one relay is selected to improve the signal-to-interference and noise ratio (SINR) of the FD relaying system. The performance of the proposed design is investigated. Moreover, the closed-form equations of the ergodic capacity and outage probability are attained. The analytical results are confirmed by different simulations. Results indicate that the proposed design achieves an additional spatial diversity gain because of using the antenna selection at the relay nodes. Moreover, by power scaling (PS) method, the system performance is effectively improved compared to the conventional FD relaying structures.

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A 0.5-to-3GHz Full-Duplex Receiver with 27dB Self-Interference-Cancellation

Cited by 5 publications

References 7 publications

A Sub-THz Full-Duplex Phased-Array Transceiver With Self-Interference Cancellation and LO Feedthrough Suppression

A Sub-THz Full-Duplex Phased-Array Transceiver With Self-Interference Cancellation and LO Feedthrough Suppression

Implementation of In-Band Full-Duplex Using Software Defined Radio with Adaptive Filter-Based Self-Interference Cancellation

Diversity achieving full‐duplex DF relaying with joint relay‐antenna selection under Nakagami‐m fading environment

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