cdma

Functions of the cdma2000 Signaling Services Layer

Functions of the cdma2000 Signaling Services Layer The Signaling Services Layer processes all messages exchanged between the mobile and the base station. These messages control such things as call setup...
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cdma2000 Signaling Services Layercdma, function signal, mobile, pn, state

MOBILE TRANSITION INTO DIFFERENT STATES

  A mobile will in one of four states after it is powered on. Initialization State In the Initialization State, the mobile tunes to the first preferred RF frequency channel...
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MOBILE TRANSITION INTO DIFFERENT STATEScdma, function signal, mobile, state

Network Architecture in LTE

Figure shows the network architecture of the Evolved Packet Core (EPC). The EPC consists of three main nodes: the Mobility Management Entity (MME), the Serving Gateway (SGW) and the Packet...
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Network Architecture in LTE, interface, networkattach, cdma, epc, lte, mme, packet core, pgw, pn, sgw, telecom

LTE INTRODUCTION AND BACKGROUND

The uppermost evolution track shown in Figure is that developed in the 3rd Generation Partnership Project (3GPP), which is currently the dominant standards development group for mobile radio systems and...
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access, radio, evolution, technology, system3gpp, apn, bsic, cdma, epc, fdma, generation, gsm, hlr, lte, pn, telecom, vlr

PN Code Generation & Masking

  PN Code Generation PN Code Generation PN codes are generated from prime polynomials using modulo 2 arithmetic. The state machines generating these codes are very simple and consist of...
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How Walsh Code Generate in CDMA

• Definition: Orthogonal functions have zero correlation.  Two binary sequences are orthogonal if the process of “XORing” them results in an equal number of 1’s and 0’s. Example:   0000...
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orthogonal, sequence, codes, channelsapn, cdma, CHANNEL, forward, frequency, generate, orthogonal, pn, pn code, processing gain, traffic, vlr, walsh, walsh table cdma

Spread Spectrum Concept

CDMA IS A SCHEME IN WHICH MULTIPLE USERS ARE ASSIGNED RADIO RESOURCES USING THE DIRECT SEQUENCE – SPREAD SPECTRUM (DSSS) TECHNIQUES. ALTHOUGH ALL USERS ARE TRANSMITTING IN THE SAME RF...
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Spread Spectrum Conceptapn, BCCH, cdma, CHANNEL, epc, forward, frequency, generate, gsm, lte, orthogonal, pn, pn code, processing gain, traffic, vrf, walsh

CDMA Traffic Channel Definitions Effective Traffic,Actual Traffic and Physical Traffic

Traffic Channel Definitions In analog systems, the traffic channels (or voice channels) are synonymous with the physical transceiver hardware. The nature of CDMA technology implies that the effective traffic carrying...
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actual traffic channels, channels, traffic channels, soft handoff, channels required, primary traffic, erlangs generated effective trafficcdma, cdma rf planning, cdma traffic channel, rf optimization

How Many CODES in CDMA?

There Are Three Codes in CDMA PN Long Code,PN Short Code & Walsh Code. PN Long Code The Long Code is a PN sequence that is 242 – 1 bits...
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PN Long Code, PN short codes, walsh codes, cdma coding system, cdma code type, cdma code defination, coding in cdma, code work for cdma systemcdma, cdma code, cdma long code, pn, pn code, walsh code

List of Parameters and Terms for PN Offset Planning in CDMA

There are various parameters and terms which come into play when discussing PN offsets and their function in CDMA. System Time All base station digital transmissions are referenced to a...
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System Time ,Time Reference ,pilot pn ,Active Set ,Candidate Set ,Neighbor Set ,Remaining Set pilot arrival ,search window ,mobile station ,time reference ,pilot strength ,pilot offset ,neighbor search multipath componentcdma, cdma optimization, cdma pn planning, cdma search window size, handoff, parameter pn sequence cdma adalah, pilot pn, rf optimization, search window

Principle of Power control in LTE

Power control – already being applied in 2nd and 3rd generation networks – has high potential for improvement of the performance of mobile networks. Main benefits are: 1. It can...
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What is Cyclic prefix in LTE ?

The guard period after each rectangular pulse carrying the modulated data symbol is a simple and efficient method to deal with multi-path reception. The cyclic prefix (CP) simply consists of...
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What is Cyclic prefix in LTE, symbol, receiver, correlation, interference, FFT synchronization, cdma, cyclic prefix, cyclic prefix in lte, cyclic prefix length 32 symbols for lte, lte, ofdma, ofdma system, rake, synchronization, telecom

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