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Reliable estimation of users' channels and data in rapidly time varying fading environments is a very challenging task of multiuser detection (MUD) techniques that promise impressive capacity gains for interference limited systems such as…

信息论 · 计算机科学 2012-05-15 Indu L. Shakya , Falah H. Ali

Human Body Communication (HBC) provides a low power communication medium for energy constrained wearable/ implantable devices in and around the human body. This paper presents a broadband HBC transceiver implemented in 65nm CMOS that…

信号处理 · 电气工程与系统科学 2018-04-19 Shovan Maity , Baibhab Chatterjee , Gregory Chang , Shreyas Sen

A near-field wideband communication system is investigated in which a base station (BS) employs an extra-large scale antenna array (ELAA) to serve multiple users in its near-field region. To facilitate near-field multi-user beamforming and…

信息论 · 计算机科学 2024-09-24 Zhaolin Wang , Xidong Mu , Yuanwei Liu

We demonstrate significantly improved performance of a microwave true time delay line (TTDL) based on an integrated micro-ring resonator (MRR) Kerr optical comb source with a channel spacing of 49GHz, corresponding to 81 channels over the…

This paper proposes a novel scheme for mitigating strong interferences, which is applicable to various wireless scenarios, including full-duplex wireless communications and uncoordinated heterogenous networks. As strong interferences can…

信号处理 · 电气工程与系统科学 2021-03-05 Wei Zhang , Yi Jiang , Bin Zhou , Die Hu

Multi-antenna (or MIMO) processing is a promising solution to the problem of jammer mitigation. Existing methods mitigate the jammer based on an estimate of its spatial signature that is acquired through a dedicated training phase. This…

信号处理 · 电气工程与系统科学 2025-10-03 Gian Marti , Christoph Studer

In-band full-duplex transmission allows a relay station to theoretically double its spectral efficiency by simultaneously receiving and transmitting in the same frequency band, when compared to the traditional half-duplex or out-of-band…

信息论 · 计算机科学 2019-03-07 João S. Lemos , Francisco A. Monteiro , Ivo Sousa , António Rodrigues

Combined with space-time coding, the orthogonal frequency division multiplexing (OFDM) system explores space diversity. It is a potential scheme to offer spectral efficiency and robust high data rate transmissions over frequency-selective…

计算与语言 · 计算机科学 2010-02-18 Raungrong Suleesathira

Delay alignment modulation (DAM) is a novel transmission technique for wireless systems with high spatial resolution by leveraging delay compensation and path-based beamforming, to mitigate the inter-symbol interference (ISI) without…

信号处理 · 电气工程与系统科学 2024-07-31 Zhiwen Zhou , Zhiqiang Xiao , Yong Zeng

The recently proposed orthogonal time frequency space (OTFS) modulation technique was shown to provide significant error performance advantages over orthogonal frequency division multiplexing (OFDM) in Doppler channels. In this paper, we…

信息论 · 计算机科学 2018-02-19 P. Raviteja , Khoa T. Phan , Yi Hong , Emanuele Viterbo

N-continuous orthogonal frequency division multiplexing (NC-OFDM) is a promising technique to obtain significant sidelobe suppression for baseband OFDM signals, in future 5G wireless communications. However, the precoder of NC-OFDM usually…

信息论 · 计算机科学 2016-01-20 Peng Wei , Lilin Dan , Yue Xiao , Wei Xiang , Shaoqian Li

We experimentally demonstrate the enhanced atmospheric turbulence resiliency in a 137.8 Gbit/s/mode mode-division multiplexing free-space optical communication link through the application of a successive interference cancellation digital…

信号处理 · 电气工程与系统科学 2023-01-04 Yiming Li , Zhaozhong Chen , Zhouyi Hu , David M. Benton , Abdallah A. I. Ali , Mohammed Patel , Martin P. J. Lavery , Andrew D. Ellis

Time-Delay Interferometry (TDI) is the data processing technique that cancels the large laser phase fluctuations affecting the one-way Doppler measurements made by unequal-arm space-based gravitational wave interferometers. In a previous…

广义相对论与量子宇宙学 · 物理学 2023-07-18 Massimo Tinto , Sanjeev Dhurandhar

Laser phase noise remains a limiting factor in many experimental settings, including metrology, time-keeping, as well as quantum optics. Hitherto this issue was addressed at low frequencies, ranging from well below 1 Hz to maximally 100…

光学 · 物理学 2021-03-31 Michał Parniak , Ivan Galinskiy , Timo Zwettler , Eugene S. Polzik

In mixed near-field and far-field systems, the nonorthogonality between near-field and far-field channels may cause severe inter-user interference and hence degrade rate performance, when the analog beamforming is designed based on the…

信号处理 · 电气工程与系统科学 2026-03-10 Tianyu Liu , Changsheng You , Chao Zhou , Mingjiang Wu , Ming-Min Zhao , Zhaocheng Wang

In this paper, we propose a closely spaced multi-antenna system with \textit{passive} self-interference cancellation (\textit{p}-SIC) of $\approx 90$ dB between the transmitter and receiver antenna for full-duplex application. The…

信号处理 · 电气工程与系统科学 2022-10-03 Jogesh Chandra Dash , Debdeep Sarkar

For future wireless communication systems, full duplex is seen as a possible solution to the ever present spectrum shortage. The key aspect to enable In-Band Full Duplex (IBFD) is sufficient cancellation of the unavoidable Self-Interference…

信号处理 · 电气工程与系统科学 2017-11-21 Mustafa Emara , Patrick Rosson , Kilian Roth , David Dassonville

This work proposes a blind adaptive reduced-rank scheme and constrained constant-modulus (CCM) adaptive algorithms for interference suppression in wireless communications systems. The proposed scheme and algorithms are based on a two-stage…

信息论 · 计算机科学 2013-01-10 Rodrigo C. de Lamare , Raimundo Sampaio-Neto , Martin Haardt

Medium-scale or large-scale receive antenna array with digital beamforming can be employed at receiver to make a significant interference reduction, but leads to expensive cost and high complexity of the RF-chain circuit. To deal with this…

信息论 · 计算机科学 2018-06-01 Linlin Sun , Yaolu Qin , Feng Shu , Riqing Chen , Yijin Zhang , Shuping Yang , Jinhui Lu , Jun Li , Jiangzhou Wang

One of the promising technologies for LTE Evolution is full-duplex radio, an innovation is expected to double the spectral efficiency. To realize full-duplex in practice, the main challenge is overcoming self-interference, and to do so,…

信息论 · 计算机科学 2017-02-16 Min Soo Sim , MinKeun Chung , Dongkyu Kim , Jaehoon Chung , Dong Ku Kim , Chan-Byoung Chae