64-QAM 60-GHz CMOS Transceivers for IEEE 802.11ad/ay

Wu, Rui; Minami, Ryo; Tsukui, Yuuki; Kawai, Seitaro; Seo, Yuuki; Sato, S.; Kimura, Kazushige; Kondo, Satoshi; Ueno, Takahiro; Fajri, Nurul; Maki, Shoutarou; Nagashima, Noriaki; Takeuchi, Yoshinori; Yamaguchi, Tatsuya; Musa, Ahmed; Tokgoz, Korkut Kaan; Siriburanon, Teerachot; Liu, Bangan; Wang, Yun; Pang, Jian; Li, Ning; Miyahara, Masaya; Okada, Kei; Matsuzawa, Akira

doi:10.1109/jssc.2017.2740264

Cited by 112 publications

(44 citation statements)

References 21 publications

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“…Assuming mutually uncorrelated error contributions, the total EVM of a system can be approximated by the square root of the sum of all squared EVM contributions [24][25][26]:…”

Section: System Evm Analysis and Test Signalsmentioning

confidence: 99%

Agile multi-beam front-end for 5G mm-wave measurements

Spira

Blau

Thomä

et al. 2021

Int. J. Microw. Wireless Technol.

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The 5th generation new radio (5G NR) standards create both enormous challenges and potential to address the spatio-spectral-temporal agility of wireless transmission. In the framework of a research unit at TU Ilmenau, various concepts were studied, including both approaches toward integrated circuits and distributed receiver front-ends (FEs). We report here on the latter approach, aiming at the proof-of-principle of the constituting FEs suitable for later modular extension. A millimeter-wave agile multi-beam FE with an integrated 4 by 1 antenna array for 5G wireless communications was designed, manufactured, and verified by measurements. The polarization is continuously electronically adjustable and the directions of signal reception are steerable by setting digital phase shifters. On purpose, these functions were realized by analog circuits, and digital signal processing was not applied. The agile polarization is created inside the analog, real-time capable FE in a novel manner and any external circuitry is omitted. The microstrip patch antenna array integrated into this module necessitated elaborate measurements within the scope of FE characterization, as the analog circuit and antenna form a single entity and cannot be assessed separately. Link measurements with broadband signals were successfully performed and analyzed in detail to determine the error vector magnitude contributions of the FE.

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“…Assuming mutually uncorrelated error contributions, the total EVM of a system can be approximated by the square root of the sum of all squared EVM contributions [24][25][26]:…”

Section: System Evm Analysis and Test Signalsmentioning

confidence: 99%

Agile multi-beam front-end for 5G mm-wave measurements

Spira

Blau

Thomä

et al. 2021

Int. J. Microw. Wireless Technol.

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“…Furthermore, the most important contributors to the degradation of EVM are namely, LO phase noise, LO leakage, gain flatness of receiver path and I/Q imbalances including LO path. According to [62], IRR is required to be better than 35 dBc so that a BER of 10 −3 can be achieved on 64-QAM modulation. As calculated, such an IRR corresponds to less than 0.3-dB gain mismatch and less than 2-degree phase mismatch.…”

Section: F Local Oscillator Signal Generationmentioning

confidence: 99%

“…This design boosts the third-harmonic based on a transformer-based dual-tank resonator topology and further filters and extracts it using a three-stage power amplifier. Injection locking (IL) techniques for mmWave frequency synthesizer designs [62], [121], can provide competitive performance such as tuning range and phase noise. A recent work of 5G LO generation is based on injection-locked frequency multiplier (ILFM) and frequencytracking loop (FTL) [122].…”

Section: F Local Oscillator Signal Generationmentioning

confidence: 99%

Enabling Multi-Functional 5G and Beyond User Equipment: A Survey and Tutorial

Huo

Dong

et al. 2019

IEEE Access

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The fifth generation (5G) research and development has been fueled by many new breakthroughs in various areas. The recent progress in carrier aggregation (CA), licensed assisted access (LAA), massive MIMO (MaMi), beamforming techniques, cooperative spectrum sensing (CSS), compressive sensing (CS), machine learning, etc., has provided inspiring and promising approaches to address 5G and beyond challenges. However, at the user equipment (UE) end, limited design budget and hardware resources bring along a series of challenging implementation issues when delivering multi-standard and multi-functional wireless communications. In this paper, we first review recent advances in technical standards and critical enabling techniques, accompanied with several case studies of product developments. After the classification of typical 5G application and deployment scenarios, we propose and analyze a novel hardware reuse and multiplexing solution to facilitate cost-effective and energy-efficient UE design, followed by an investigation of state-of-the-art hardware development from the systems and circuits standpoint. Moreover, wireless UE hardware solutions, UE proof-of-concept (PoC) implementation and field test are proposed and discussed. Finally, the new trends of UE design and terahertz technologies for 5G and beyond applications are investigated and envisioned. LNA

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“…Gbps speeds over 2 meters were also demonstrated using integrated architectures [58]. The technology is now at a point where sophisticated modulation techniques can be employed at multi-gigabit rates for the latest IEEE standards using low supply voltages and small chip areas [59].…”

Section: Brief Historymentioning

confidence: 99%

Optical Wireless and Millimeter Waves for 5G Access Networks

Leeson¹,

Higgins²

2019

The Fifth Generation (5G) of Wireless Communication

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Growing bandwidth demands are driving the search for increased network capacity leading to the exploration of new wavelength ranges for future communication systems. Therefore, we consider two technologies that offer increased transmission bandwidths by virtue of their high carrier frequencies, namely optical wireless and millimeter-wave transmission. After highlighting the relevant electromagnetic (EM) spectrum region, we briefly describe the applications and properties of each approach coupled with a short history of their development. This is followed by a performance comparison in two possible 5G links: outdoor point-to-point and indoor hotspots. We find that in both cases, there are regions where optical wireless communications (OWC) are better, but others where millimeter waves are to be preferred. Specifically, the former outperforms the latter over distances up to approximately 50 meters outdoors and a 10-meter hotspot radius indoors.

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64-QAM 60-GHz CMOS Transceivers for IEEE 802.11ad/ay

Cited by 112 publications

References 21 publications

Agile multi-beam front-end for 5G mm-wave measurements

Agile multi-beam front-end for 5G mm-wave measurements

Enabling Multi-Functional 5G and Beyond User Equipment: A Survey and Tutorial

Optical Wireless and Millimeter Waves for 5G Access Networks

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