When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. ETSI Satellite Digital Radio - Wikipedia

    en.wikipedia.org/wiki/ETSI_Satellite_Digital_Radio

    ETSI Satellite Digital Radio (SDR or ETSI SDR) describes a standard of satellite digital radio. It is an activity of the European standardisation organisation ETSI . It addresses systems where a satellite broadcast directly to mobile and handheld receivers in L band or S band and is complemented by terrestrial transmitters.

  3. Synchronous dynamic random-access memory - Wikipedia

    en.wikipedia.org/wiki/Synchronous_dynamic_random...

    The DDR interface accomplishes this by reading and writing data on both the rising and falling edges of the clock signal. In addition, some minor changes to the SDR interface timing were made in hindsight, and the supply voltage was reduced from 3.3 to 2.5 V. As a result, DDR SDRAM is not backwards compatible with SDR SDRAM.

  4. List of software-defined radios - Wikipedia

    en.wikipedia.org/wiki/List_of_software-defined...

    Embedded or True IQ data via 1 x or 2 x USB 3.0. Optional 1 x USB 3.1 GEN2 (power only). Internet remote via HTTP / JSON Yes Yes No 1 x XC7A200T-2 (930 GMACs) Aaronia SPECTRAN V6 Command Center [3] €24,980 EUR Pre-built Active 10 MHz – 8 GHz (planned extensions for 9 kHz – 26 GHz; 9 kHz – 55 GHz, and 9 kHz – 70 GHz)

  5. Software-defined radio - Wikipedia

    en.wikipedia.org/wiki/Software-defined_radio

    Software-defined radio (SDR) is a radio communication system where components that conventionally have been implemented in analog hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a computer or embedded system. [1] While the concept of SDR is not new, the ...

  6. Quizlet - Wikipedia

    en.wikipedia.org/wiki/Quizlet

    Quizlet is a multi-national American company that provides tools for studying and learning. [1] Quizlet was founded in October 2005 by Andrew Sutherland, who at the time was a 15-year old student, [ 2 ] and released to the public in January 2007. [ 3 ]

  7. DDR SDRAM - Wikipedia

    en.wikipedia.org/wiki/DDR_SDRAM

    Page 4.5.10-7 defines 2.5V (left), 1.8V (centre), TBD (right), while page 4.20.5–40 nominates 3.3V for the right notch position. The orientation of the module for determining the key notch position is with 52 contact positions to the left and 40 contact positions to the right.

  8. SDR - Wikipedia

    en.wikipedia.org/wiki/SDR

    SmartDraw image file format, with file extension .sdr Software-defined radio , enabling computers to tune a wide spectrum of radio frequencies, using software instead of hardware for modulation and demodulation

  9. Frequency-hopping spread spectrum - Wikipedia

    en.wikipedia.org/wiki/Frequency-hopping_spread...

    Spread-spectrum signals are highly resistant to deliberate jamming unless the adversary has knowledge of the frequency-hopping pattern. Military radios generate the frequency-hopping pattern under the control of a secret Transmission Security Key (TRANSEC) that the sender and receiver share in advance.