• Spectral efficiency, spectrum efficiency or bandwidth efficiency refers to the information rate that can be transmitted over a given bandwidth in a specific...
    25 KB (2,139 words) - 15:49, 10 July 2024
  • CDMA spectral efficiency refers to the system spectral efficiency in bit/s/Hz/site or Erlang/MHz/site that can be achieved in a certain CDMA based wireless...
    13 KB (1,829 words) - 02:02, 26 April 2024
  • the spectral efficiency by a factor of 2. This is a cost-effective alternative to utilizing 16-PSK, instead of QPSK to double the spectral efficiency. Any...
    42 KB (6,226 words) - 17:25, 4 September 2024
  • Thumbnail for Spectral sensitivity
    Spectral sensitivity is the relative efficiency of detection, of light or other signal, as a function of the frequency or wavelength of the signal. In...
    8 KB (728 words) - 13:38, 17 September 2022
  • Thumbnail for Spectral density
    noise Least-squares spectral analysis Noise spectral density Spectral density estimation Spectral efficiency Spectral leakage Spectral power distribution...
    36 KB (5,666 words) - 05:12, 24 September 2024
  • include: quality of service targets, traffic capacity and cell size, spectral efficiency and sectorization, traffic capacity versus coverage, and channel...
    12 KB (1,380 words) - 12:41, 16 February 2023
  • shared spectrum efficiency (FSSE) can be used as a combined measure of fairness and system spectrum efficiency. The system spectral efficiency is the aggregate...
    16 KB (2,432 words) - 09:41, 15 January 2024
  • Thumbnail for Wi-Fi 6
    The quadrupling of overall throughput is made possible by a higher spectral efficiency. 802.11ax Wi-Fi has a main feature called OFDMA, similar to how cell...
    18 KB (1,495 words) - 22:46, 12 November 2024
  • Thumbnail for Visible spectrum
    limited by the spectral sensitivity functions of the visual opsins. The range is defined psychometrically by the luminous efficiency function, which...
    37 KB (4,028 words) - 23:47, 12 November 2024
  • Thumbnail for Orthogonal frequency-division multiplexing
    Characteristics and principles of operation section below. High spectral efficiency as compared to other double sideband modulation schemes, spread spectrum...
    88 KB (11,271 words) - 14:20, 22 November 2024
  • communications systems, such as in 802.11 Wi-Fi standards. Arbitrarily high spectral efficiencies can be achieved with QAM by setting a suitable constellation size...
    15 KB (1,924 words) - 22:22, 13 November 2024
  • Multiple Output) and beamforming for better signal quality and improved spectral efficiency. In November 2008, the International Telecommunication Union-Radio...
    60 KB (6,514 words) - 15:43, 21 November 2024
  • Thumbnail for Comparison of mobile phone standards
    different times. In theory, CDMA, TDMA and FDMA have exactly the same spectral efficiency but practically, each has its own challenges – power control in the...
    14 KB (1,389 words) - 10:52, 6 October 2024
  • Thumbnail for Bandwidth (signal processing)
    dictionary. Bandwidth extension Broadband Noise bandwidth Rise time Spectral efficiency Spectral width The information capacity of a channel depends on noise...
    16 KB (2,296 words) - 18:37, 17 August 2024
  • Thumbnail for Eb/N0
    signal-to-noise ratio (SNR) in that bandwidth divided by the "gross" link spectral efficiency in bit/s⋅Hz, where the bits in this context again refer to user data...
    8 KB (1,377 words) - 14:33, 11 March 2024
  • algorithms such as an adaptive equalizer at the receiver. GMSK has high spectral efficiency, but it needs a higher power level than QPSK, for instance, in order...
    9 KB (1,126 words) - 18:05, 5 October 2024
  • Thumbnail for Quantum efficiency
    The term quantum efficiency (QE) may apply to incident photon to converted electron (IPCE) ratio of a photosensitive device, or it may refer to the TMR...
    11 KB (1,521 words) - 14:55, 19 February 2024
  • capacity. Efficient dynamic RRM schemes may increase the system spectral efficiency by an order of magnitude, which often is considerably more than what...
    10 KB (1,115 words) - 07:44, 11 January 2024
  • Thumbnail for Digital Audio Broadcasting
    open standard deposited at ETSI. DAB can give substantially higher spectral efficiency, measured in programmes per MHz and per transmitter site, than analogue...
    92 KB (9,882 words) - 04:53, 17 November 2024
  • because the phase continuity yields high spectral efficiency, and the constant envelope yields excellent power efficiency. The primary drawback is the high implementation...
    6 KB (939 words) - 15:17, 31 August 2024
  • Thumbnail for Solar-cell efficiency
    Multiplying the spectral differences by the quantum efficiency of the solar cell in question yields the efficiency. Terrestrial efficiencies typically are...
    49 KB (5,932 words) - 07:05, 19 October 2024
  • lower spectral efficiency, which means it may transmit at a lower bit rate for a given bandwidth. The latter has double the spectral efficiency, but is...
    5 KB (599 words) - 23:14, 13 September 2024
  • can greatly increase the spectral efficiency of the network. The advantages of D2D communications go beyond spectral efficiency; they can potentially improve...
    4 KB (504 words) - 14:22, 23 February 2024
  • Thumbnail for Code-division multiple access
    lookup tables. In theory CDMA, TDMA and FDMA have exactly the same spectral efficiency, but, in practice, each has its own challenges – power control in...
    36 KB (4,745 words) - 20:54, 27 October 2024
  • benefits of compatible-sideband over conventional AM are increased spectral efficiency due to a reduction in bandwidth of 50% as well as a decrease in wasted...
    2 KB (222 words) - 18:19, 26 August 2024
  • Thumbnail for Reflectance
    the radiant flux received by that surface. The spectral hemispherical reflectance in frequency and spectral hemispherical reflectance in wavelength of a...
    11 KB (1,272 words) - 01:00, 3 November 2024
  • Thumbnail for Radio
    data using a minimum of radio spectrum bandwidth. It has higher spectral efficiency and more resistance to fading than AM or FM. In OFDM, multiple radio...
    163 KB (16,271 words) - 09:26, 11 November 2024
  • Scalable channel bandwidth 5–20 MHz, optionally up to 40 MHz Peak link spectral efficiency of 15 bit/s/Hz in the downlink and 6.75 bit/s/Hz in the uplink (meaning...
    17 KB (1,971 words) - 03:55, 31 July 2024
  • Thumbnail for Wi-Fi
    points with roaming permitted between them. Over time, the speed and spectral efficiency of Wi-Fi have increased. As of 2019,[update] some versions of Wi-Fi...
    123 KB (13,037 words) - 14:00, 18 November 2024
  • Thumbnail for Trunked radio system
    benefits of less user intervention to operate the radio and greater spectral efficiency with large numbers of users. Instead of assigning a radio channel...
    20 KB (2,892 words) - 17:12, 12 September 2024