A Fully Integrated MIMO Multiband Direct Conversion CMOS Transceiver for WLAN Applications (802.11n)

Behzad, Arya; Carter, K.A.; Chien, Hung-Ming; Wu, S.; Pan, M.; Lee, C.P.; Li, Qiang; Leete, J.; Au, S.; Kappes, Martin; Zhou, Zhimin; Ojo, D.; Zhang, Lijun; Zolfaghari, A.; Castanada, J.; Darabi, Hooman; Yeung, B.; Rofougaran, A.; Rofougaran, M.; Trachewsky, J.; Moorti, T.; Gaikwad, Rohit; Bagchi, A.; Hammerschmidt, J.S.; Pattin, J.; Rael, J.J.; Marholev, B.

doi:10.1109/jssc.2007.908667

Cited by 93 publications

(12 citation statements)

References 9 publications

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“…Consider a wireless communication system employing synchrodyne architecture transceivers in the RF front-end [38]. At the transmitter, the digital baseband modulated signal undergoes pulse shaping and up-conversion to the desired carrier frequency.…”

Section: B Hardware Impaired Signal Modelmentioning

confidence: 99%

Asymmetric Modulation for Hardware Impaired Systems—Error Probability Analysis and Receiver Design

Javed

Amin

Ikki

et al. 2019

IEEE Trans. Wireless Commun.

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Section: B Hardware Impaired Signal Modelmentioning

confidence: 99%

Asymmetric Modulation for Hardware Impaired Systems—Error Probability Analysis and Receiver Design

Javed

Amin

Ikki

et al. 2019

IEEE Trans. Wireless Commun.

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“…Apparently, RF chain management will be more effective in saving power when _ ℎ is relative larger. The relative size of _ ℎ adopted from [6] is typical of realistic MIMO transceivers [7].…”

Section: Power Model For a Mimo Transceivermentioning

confidence: 99%

Adaptive RF chain management for energy-efficient spatial-multiplexing MIMO transmission

Lin

Sabharwal

2009

Proceedings of the 2009 ACM/IEEE International Symposium on Low Power Electronics and Design

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Figure 1. RF chain management is intended to be implemented inside the wireless network interface card (WNIC) ABSTRACTWe present the theoretical foundation, implementation, and experimental evaluation of a novel power-saving mechanism for wireless transmission from multiple-input multiple-output (MIMO) transceivers, called RF chain management. RF chain management seeks to minimize the energy per bit for MIMO transmission, via adaptively choosing the optimal RF chain configuration, and satisfies the minimum data rate requirement at the same time. Our simulation shows that up to 45% and averagely 23% energy per bit reduction can be achieved. We have also built a prototype based on the WARP platform, and our experimental results have proved the feasibility of RF chain management in real systems and under realistic channels.

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“…the effects of load pulling and load variation to the VCO), the power efficiency can be penalized. An example is given in Figure , where a multi‐band MIMO WLAN transceiver features numerous receiver (RX) and transmitter (TX) paths distributed over a system‐on‐a‐chip , involving heavy LO signal distribution. Since each divider has to drive a considerable load capacitance, their wide transistors impose a large capacitance to the VCO.…”

Section: Introductionmentioning

confidence: 99%

A 3.6‐mW 6‐GHz current‐reuse VCO‐buffer with improved load drivability in 65‐nm CMOS

Amin

Mak

Martins

2013

Circuit Theory & Apps

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A new current‐reuse voltage‐controlled oscillator (VCO)‐buffer with enhanced load drivability is proposed. It incorporates a PMOS‐based source follower stacked atop a NMOS‐based LC VCO to share the bias current, while preventing the voltage stress at any oscillation node from exceeding the 1.2‐V technology voltage limit. Also, ac‐coupling networks are avoided between the VCO and buffer, improving the Q of the LC tank while minimizing parasitics. With internal buffering, the VCO can directly drive up a 50‐Ω load for testing, or to withstand a large capacitive load in on‐chip local oscillator distribution, particularly suitable for multi‐band MIMO WLAN radios. The fabricated VCO‐buffer in 65‐nm CMOS measures 13.8% tuning range from 5.64 to 6.4 GHz, consumes 3.6 mW at 1.2 V and exhibits −108.84 dBc/Hz phase noise at 1‐MHz offset. Copyright © 2013 John Wiley & Sons, Ltd.

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A Fully Integrated MIMO Multiband Direct Conversion CMOS Transceiver for WLAN Applications (802.11n)

Cited by 93 publications

References 9 publications

Asymmetric Modulation for Hardware Impaired Systems—Error Probability Analysis and Receiver Design

Asymmetric Modulation for Hardware Impaired Systems—Error Probability Analysis and Receiver Design

Adaptive RF chain management for energy-efficient spatial-multiplexing MIMO transmission

A 3.6‐mW 6‐GHz current‐reuse VCO‐buffer with improved load drivability in 65‐nm CMOS

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