physical

Basic Work of WCDMA Physical Channel

A physical channel is defined by a specific carrier frequency, code (scrambling code, spreading code) and relative phase. In UMTS system, the different code (scrambling code or spreading code) can distinguish the...
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cdma, CHANNEL, code, physical, scrambling, telecom, time slot, ul

BS Transmitting and Receiving Process in Wimax.

Transmitting:  After being processed at the MAC layer, the downlink data is sent to the physical layer inthe format of MAC PDU. The MAC PDU arranges the data block size...
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coding, downlink data, fdma, mac, modulation, ofdma, pdu, physical, radio resource, telecom, uplink

WCDMA Radio Interface Channel Definition

Logical Channel = information container  Defined by is transferred. Transport Channel = characteristics of transmission Described by and with data is transmitted over the radio interface . Physical Channel =...
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cdma, CHANNEL, code, frequency, logical, physical, telecom, transport

Orthogonal Code Usage – Coding & Decoding in WCDMA

How Orthogonal Code works in WCDMA? 1.Coding By spreading, each symbol is multiplied with all the chips in the orthogonal sequence assigned to the user. The resulting sequence is processed...
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Orthogonal Code Usage - Coding & Decoding in WCDMA, transmitter, receiver, code, usage wcdma, wcdma codescdma, CHANNEL, orthogonal, physical, sequence, symbol, telecom, user, wcdma spreading

Downlink Logical Channel in GSM

In 2G GSM Technology in forward direction Downlink (GSM BTS to GSM Mobile). There are mainly five Downlink Logical Channel in GSM. Frequency correction channel (FCCH) Synchronous channel (SCH) Broadcast...
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paging channel, doanlink, gsm doanlink channel, logical bts to mobile gsm channel, bts to mobile forward channel, downlink gsm channel, 2g downlink channel, fcch, bcch, agch, pch, schBCCH, bsic, CHANNEL, channel coding, channel in gsm, frequency hopping, hlr, hopping, interference, interleaving, logical, physical, pn, vlr

Physical Combination of Logical Channel in GSM

As shown above, CCCH=PCH+RACH+AGCH; downlink CCCH=PCH+AGCH; and uplink CCCH=RACH. In the above combinations, combination 3 and 4 must be allocated to slot 0 of the BCCH carrier configured for the...
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Physical Combination of Logical Channel in GSMAGCH, allocation, BCCH, carrier, ccch, cell, CHANNEL, channel in gsm, combination, epc, frame, gsm, hlr, lte, pch, physical, pn, rach, rho, sacch, timeslot, uplink, vlr, vrf

Burst in GSM

The Logical  Channel is used in time multiplex in a physical channel, which is categorized according to the types of messages transmitted in the physical channel. Different logical channels are...
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same frequency, training, different, sequence, channels, logical, transmissionapn, brust, brust in gsm, cell, CHANNEL, channel coding, epc, frequency hopping, gsm, hlr, hopping, interference, interleaving, les differents types de burst, logical, lte, lte system cell formation, physical, pn, rho, speech coding, timeslot, transmission, trx, vlr, vrf

Definition of Logical Channel in GSM

The physical channel is the medium over which the information is carried. The logical channel consists of the information carried over the physical channels. A Physical Channel (a TS, defined...
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messages, information, channel, physical, logicalCHANNEL, channel coding, channel in gsm, frequency hopping, hopping, interference, logical, physical, speech coding, uplink

What is Frame and Channel in GSM

The major basic concept concerned with the radio path transmission of the GSM system is the burst sequence (simplified as Burst). It is a string of transmission units including more...
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frequency, transmission, brustbrust, brust in gsm, CHANNEL, channel coding, channel in gsm, fdma, frequency hopping, gsm, hopping, interference, interleaving, logical, lte, physical, pn, speech coding, timeslot, transmission, trx, vlr

DTX: Discontinuous Transmission

Actually, during the communication process, the mobile subscriber talks only 40% of the time and there is not much useful information transmitted during rest of the time. If all the...
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discontinuous transmission, transmission, voice, system, signal, mobileapn, brust, brust in gsm, CHANNEL, channel coding, frequency hopping, gsm, hlr, hopping, interference, interleaving, logical, lte, physical, pn, rho, speech coding, timeslot, transmission, trx, vlr, vrf

What is Interleaving

If the voice signal is modulated and transmitted directly after channel coding, due to the condition changes in mobile communication channel, a deep of the fading will influence a successive...
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second interleaving, channel coding, interleaving, successive, burst, blockapn, brust, brust in gsm, CHANNEL, channel coding, frequency hopping, gsm, hlr, hopping, interference, interleaving, logical, lte, physical, pn, speech coding, timeslot, transmission, trx, what is fading and its types

What is Channel Coding

To check and correct errors during the transmission, redundancy data and the information calculated from the source data are added to the stream so as to increase the bit rate....
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redundancy, stream, coding, stream, coder, voiceapn, brust, brust in gsm, CHANNEL, channel coding, frequency hopping, gsm, hopping, interference, interleaving, logical, lte, physical, pn, speech coding, timeslot, transmission, trx

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