Based on the renowned Code Excited Linear Prediction (CELP) coding model, the G.729 speech compression standard delivers toll-quality speech, similar in quality to 32-kbps ADPCM but at one-quarter the bit rate. With the low rate of 8 kbps, G.729 is
ZigBee的协议 IEEE Standard for Information technology— Telecommunications and information exchange between systems— Local and metropolitan area networks— Specific requirements Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Spe
Abstract: This standard defines the protocol and compatible interconnection for data communication devices using low data rate, low power and low complexity, short-range radio frequency (RF) transmissions in a wireless personal area network (WPAN).
EEE Standard for Information technology— Telecommunications and information exchange between systems— Local and metropolitan area networks— Specific requirements Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications
The NE5532, NE5532A, SA5532, and SA5532A are high-performance operational amplifiers combining excellent dc and ac characteristics. They feature very low noise, high output-drive capability, high unity-gain and maximum-output-swing bandwidths, low d
6LoWPAN: The Wireless Embedded Internet /by Zach Shelby, Carsten Bormann. In this book, the authors provide an overview of the 6LoWPAN family of standards, architecture, and related wireless and Internet technology. Starting with an overview of the
This chapter generalizes compressed sensing (CS) to reduced-rate sampling of analog signals. It introduces Xampling, a uni ed framework for low rate sam- pling and processing of signals lying in a union of subspaces.
Wireless cellular networks feature two emerging technological trends. The first is the direct Device-to-Device (D2D) communications, which enables direct links between the wireless devices that reutilize the cellular spectrum and radio interface. Th
A low-threshold middle-infrared (mid-IR) MgO:PPLN optical parametric generation (OPG) pumped by a laser diode (LD) end-pumped Z-type Nd:YLF laser at 1047 nm is realized with high reflectivity(HR) mirror for signal. At repetition rate of 10 kHz, the O
We report a nanosecond-pulse amplification system based on an Yb-doped, 100-\mu m core, rod-type photonic crystal fiber. Up to 10W of average power with pulse energy of 1 mJ and peak power of 450 kWis obtained at the repetition rate of 10 kHz. The hi
Based on SMIC 0.18 mu m standard CMOS technology, an input-powered vibrational energy harvesting interface circuit is proposed. It can be applied in energy harvesting devices for the extremely low voltage and high conversion rate. The simulation resu
We demonstrate a high-speed silicon carrier-depletion Michelson interferometric (MI) modulator with a low on-chip insertion loss of 3 dB. The modulator features a compact size of 30 dB. The Vπ·Lπ of the MI modulator is 0.95–1.26 V·cm under a reverse
