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  2. Code-division multiple access - Wikipedia

    en.wikipedia.org/wiki/Code-division_multiple_access

    The ratio / is called the spreading factor or processing gain and determines to a certain extent the upper limit of the total number of users supported simultaneously by a base station. [1] [2] Generation of a CDMA signal. Each user in a CDMA system uses a different code to modulate their signal.

  3. Multi-carrier code-division multiple access - Wikipedia

    en.wikipedia.org/wiki/Multi-carrier_code...

    Multi-carrier code-division multiple access (MC-CDMA) is a multiple access scheme used in OFDM-based telecommunication systems, allowing the system to support multiple users at the same time over same frequency band. MC-CDMA spreads each user symbol in the frequency domain.

  4. cdmaOne - Wikipedia

    en.wikipedia.org/wiki/CdmaOne

    cdmaOne network structure. The IS-95 standards describe an air interface, [1] a set of protocols used between mobile units and the network. IS-95 is widely described as a three-layer stack, where L1 corresponds to the physical layer, L2 refers to the Media Access Control (MAC) and Link-Access Control (LAC) sublayers, and L3 to the call-processing state machine.

  5. CDMA frequency bands - Wikipedia

    en.wikipedia.org/wiki/CDMA_frequency_bands

    Download as PDF; Printable version; In other projects ... CDMA frequency bands or frequency ranges are the cellular frequencies designated by the ITU for the ...

  6. Chip (CDMA) - Wikipedia

    en.wikipedia.org/wiki/Chip_(CDMA)

    In digital communications, a chip is a pulse of a direct-sequence spread spectrum (DSSS) code, such as a pseudo-random noise (PN) code sequence used in direct-sequence code-division multiple access (CDMA) channel access techniques.

  7. CDMA2000 - Wikipedia

    en.wikipedia.org/wiki/CDMA2000

    CDMA2000 1X (IS-2000), also known as 1x and 1xRTT, is the core CDMA2000 wireless air interface standard.The designation "1x", meaning 1 times radio transmission technology, indicates the same radio frequency (RF) bandwidth as IS-95: a duplex pair of 1.25 MHz radio channels. 1xRTT almost doubles the capacity of IS-95 by adding 64 more traffic channels to the forward link, orthogonal to (in ...

  8. images.huffingtonpost.com

    images.huffingtonpost.com/2012-03-23-1130Jud_01.pdf

    %PDF-1.4 %âãÏÓ 9 0 obj > endobj xref 9 15 0000000016 00000 n 0000000786 00000 n 0000000864 00000 n 0000000993 00000 n 0000001111 00000 n 0000001552 00000 n 0000001973 00000 n 0000002429 00000 n 0000002506 00000 n 0000002752 00000 n 0000002992 00000 n 0000003232 00000 n 0000005400 00000 n 0000005789 00000 n 0000000596 00000 n trailer ...

  9. List of CDMA terminology - Wikipedia

    en.wikipedia.org/wiki/List_of_CDMA_terminology

    A base station usually has 3 pilot numbers. Also See PN Offset. AKA – Authentication and Key Agreement A-key – Authentication Key – See CAVE-based Authentication. AMPS – Advanced Mobile Phone System AN – Access Network ANI – Automatic Number Identification ANID – Access Network Identifiers ANSI – American National Standards ...