Gbps Wireless Research Articles

Weigh-in-Motion: Lightweight Real-Time Identification of Gbps Wireless Traffic.

Distinguishing between wireless and wired traffic in a network middlebox is an essential ingredient for numerous applications including security monitoring and quality-of-service (QoS) provisioning. The majority of existing approaches have exploited the greater delay statistics, such as round-trip-time and inter-packet arrival time, observed in wireless traffic to infer whether the traffic is originated from Ethernet (i.e., wired) or Wi-Fi (i.e., wireless) based on the assumption that the capacity of the wireless link is much slower than that of the wired link. However, this underlying assumption is no longer valid due to increases in wireless data rates over Gbps enabled by recent Wi-Fi technologies such as 802.11ac/ax. In this paper, we revisit the problem of identifying Wi-Fi traffic in network middleboxes as the wireless link capacity approaches the capacity of the wired. We present Weigh-in-Motion, a lightweight online detection scheme, that analyzes the traffic patterns observed at the middleboxes and infers whether the traffic is originated from high-speed Wi-Fi devices. To this end, we introduce the concept of ACKBunch that captures the unique characteristics of high-speed Wi-Fi, which is further utilized to distinguish whether the observed traffic is originated from a wired or wireless device. The effectiveness of the proposed scheme is evaluated via extensive real experiments, demonstrating its capability of accurately identifying wireless traffic from/to Gigabit 802.11 devices.

5 Gbps wireless transmission link with an optically pumped uni-traveling carrier photodiode mixer at the receiver.

We report the first demonstration of a uni-traveling carrier photodiode (UTC-PD) used as a 5 Gbps wireless receiver. In this experiment, a 35.1 GHz carrier was electrically modulated with 5 Gbps non-return with zero on-off keying (NRZ-OOK) data and transmitted wirelessly over a distance of 1.3 m. At the receiver, a UTC-PD was used as an optically pumped mixer (OPM) to down-convert the received radio frequency (RF) signal to an intermediate frequency (IF) of 11.7 GHz, before it was down-converted to the baseband using an electronic mixer. The recovered data show a clear eye diagram, and a bit error rate (BER) of less than 10-8 was measured. The conversion loss of the UTC-PD optoelectronic mixer has been measured at 22 dB. The frequency of the local oscillator (LO) used for the UTC-PD is defined by the frequency spacing between the two optical tones, which can be broadly tuneable offering the frequency agility of this photodiode-based receiver.

Developments in Wireless Networking Technology and Study on German Researcher Test 40 Gbps Wireless Broadband

From the early broadcast and telephone to present gadgets like cellular phones as well as notebooks, accessing the global network has become the absolute most crucial and crucial aspect of our way of living. Wireless communication is an ever-building field, as well as the future, keeps numerous opportunities around. One assumption for the future within this industry is that the tools could be made to sustain communication with higher records costs as well as even more security. This paper provides the developments in wireless networking technology and study on German researcher test 40 Gbps wireless broadband.

A 40 GHz‐100 GBPS wireless access network system based on all optical transformation and photoelectric direct detection

ABSTRACTA 40 GHz coordinated multi‐point radio over fiber (40 GHz ‐CoMP‐ROF) transmission system based on 16‐quadrature amplitude modulation (QAM) and optical orthogonal frequency division multiplexing (OOFDM) and 2 × 2 multiple input multiple output (16QAM‐OOFDM‐2x2MIMO) and photoelectric direct detection is proposed and proved by theoretical derivation. Duo to the QAM and OOFDM and multiple input multiple output (MIMO) and optical orthogonal polarization splitting combining (OOPSC) and excellent algorithm, the rate of the wireless access system is up to 100Gpbs. The designed system is simulated and tested by OptiSystem which is a set of professional simulation software for communication. And then, electrical spectrum, optical spectrum, constellation diagram, clear eye diagram and good bit error rate (BER) of the wired downlink signal and the wireless downlink signal are obtained respectively. Because of the photoelectric direct detection, the complexity of the base station (BS) is simplified. Thanks to the all optical transformation and photonic multiple doubling frequency technique, the cost of the local oscillator with ultra‐high frequency is greatly reduced at the BS. Owing to the coordinated multi‐point (CoMP) technique, ultra‐high speed wireless transmitting between the mobile station and the BS can become a reality on the edge of the cell. Compared with recent schemes, the outlays of center station and base‐station are greatly decreased. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2194–2202, 2016

PIFA-based 16 × 20 large MIMO cube antenna

A wideband dual polarized planar inverted F antenna-based 16 × 20 multi-input multi-output (MIMO) antenna cube with radome is designed and developed with an aim to achieve high data rate (>1 Gbps) wireless link in an urban street grid scenario. Developed antenna is mechanically stable and has a volume of 1.8λo3. All the elements have a wide impedance bandwidth from 2.4 to 2.8 GHz (VSWR < 1.6), low mutual coupling (<−15 dB) with almost hemispherical coverage (120° beam width) and peak gain of 3 dBi. MATLAB codes were generated to calculate mean effective gain (MEG), envelop correlation and channel capacity using simulated and measured values of antenna parameter. For urban street grid line of sight case, expected channel capacity of our 16 × 20 MIMO cube antenna is 80 b/s/Hz at 30-dB SNR, with MEG (0 dB) and envelop correlation coefficient less than 0.7. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:685–690, 2015

98 mW 10 Gbps Wireless Transceiver Chipset With D-Band CMOS Circuits

Recently, short-distance high-speed wireless communication using a 60 GHz band has been studied for mobile application. To realize higher-speed wireless communication while maintaining low power consumption for mobile application D band (110-170 GHz) is promising since it can potentially provide a wider frequency band. Thus, we have studied D-band CMOS circuits to realize low-power ultrahigh-speed wireless communication. In the D band, however, since no sufficient device model is provided, research generally has to start from device modeling. In this paper, a design procedure for D-band CMOS circuits is overviewed from the device layer to the system layer, where the architecture is optimized to realize both low power and high data transfer rate. Finally, a 10 Gbps wireless transceiver with a power consumption of 98 mW is demonstrated using the 135 GHz band.

20 GHz Fractional Phased Locked Loop Circuit for the Gbps Wireless Communication

20 GHz Fractional Phased Locked Loop Circuit for the Gbps Wireless Communication

Low power 3.1–10.6 GHz IR-UWB transmitter for Gbps wireless communications

This paper reviews and discusses the design of a low-power single-full-band (3.1–10.6 GHz) noncarrier impulse-radio ultra wideband (UWB) transmitter featuring 5th-order Gaussian derivative pulse shaping, integrated BPSK modulation, and 2.5 kV whole-chip ESD (electrostatic discharge) protection. The UWB transmitter design has been implemented in a commercial 0.18 μm CMOS technology with a very small die size of 0.25 mm2. The fabricated chips have demonstrated full functionality, extremely low power consumption of 0.14 pJ/p-mV, and an ultra short pulse width of 394 ps. This ESD-protected UWB transmitter has the potential to support wireless streaming to gigabit per second (Gbps).

Silicon germanium based millimetre-wave ICs for Gbps wireless communications and radar systems

This paper establishes the viability and suitability of silicon germanium (SiGe8HP) technology, enablement tools and circuits to millimetre-wave applications today and a roadmap to the future. Key elements discussed include SiGe technology and design enablement advancements leading to the world's most highly integrated, lowest power 60 GHz transmitter/receiver ICs.