cdma

Spectrum Analysis of Spreading & Dispreading in WCDMA-3G

How Spreading & Dispreading in WCDMA-3G ? Traditional radio communication systems transmit data using the minimum bandwidth required to carry it as a narrowband signal. CDMA system mix their input...
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Spectrum Analysis of Spreading & Dispreading in WCDMA-3G, Spectrum Analysis, radio, communication, systems, transmit datacdma, cdma spreading, data, dispreading, receiver, spectrum, spreading, spreading bandwidth, system, telecom, transmit, wcdma spread, wcdma spreading

Correlation in WCDMA

How Correlation works in WCDMA ? Correlation measures similarity between any two arbitrary signals. Identical and Orthogonal signals: Correlation is used to measure similarity of any two arbitrary signals. It...
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Correlation in WCDMA, wcdma basic, signalling, telecom wcdma techniquescdma, correlate in wcdma, correlation, multiplying, orthogonal, signal, telecom, WCDMA / 3G

How Many Logical Channel in LTE ?

The following control logical channels have been defined by the 3GPP: BCCH, Broadcast Control Channel, used for the transmission of system control information. A UE needs to decode it before...
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BCCH, cdma, cell, CHANNEL, control, dl, gsm, how many ype of logical channel in lte, lte, lte downlink, mac, protocol, rlc, service, telecom, transport, ul, uplink

WCDMA Interleaving

How WCDMA Interleaving ? Effect Interleaving is used to reduce the probability of consecutive bits error Longer interleaving periods have better data protection with more delay Channel coding works well...
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WCDMA Interleaving, bits error, data protection, wcdma basic, wcdma controlcdma, CHANNEL, error, interleaving, interleaving lte, mobile, power control, radio, telecom, ue, WCDMA / 3G

WCDMA Channel Coding

Effect Enhance the correlation among symbols so as to recover the signal when interference occurs Provides better error correction at receiver, but brings increment of the delay Channel Types No...
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WCDMA Channel Coding, turbo code, convolution code, wcdma advance, wcdma bsic, wcdma codes planningcdma, CHANNEL, coding, interference, redundancy, telecom, turbo code, umts channel coding, WCDMA / 3G

The Core technology of 3G: CDMA

Formulated by the European standardization organization 3GPP, the core networkevolves on the basis of GSM/GPRS and can thus be compatible with the existingGSM/GPRS networks. It can be based on the...
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3gpp, architecture, atm, cdma, gsm, ip, network, packet, service, tdm, telecom

Which Bands Used in WCDMA ?

There are different band in different country but most of commonly used band we will discuss here. Main bands : means basic band when 3G commercial launch by Private or public...
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wcdma band, 3g band, 3g frequency, 3g spectrum, 3g band type, wcdma band usedband, cdma, CHANNEL, dl, frequency, mhz, telecom, ul, uplink, WCDMA / 3G

Radio Resource Connection (RRC) protocol in LTE

The Radio Resource Connection (RRC) protocol is implemented in the eNodeB and the UE. In WCDMA, it is implemented in the RNC! RRC is the highest protocol in the control...
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Radio Resource Connection (RRC) protocol in LTE, system information related, stratum, signaling messages, access stratumcdma, enodb, enodeb, lte, radio resource, rnc, rrc, rrc lte overview, rrc protocol, rrc radio signaling, telecom, ue

How is Basic Frame Structure in LTE ?

In FDD, the DL and UL Radio Frames (RFs) are not on the same carrier. The RF frame is called Type 1 by the 3GPP. The RF length is 10...
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lte frame structure, lte basic, Structure, subframes, frames, lte3gpp, cdma, dl, fdd, frame, lte, rf, structure, sub-frame, telecom, ul, uplink

OFDMA Parameter for LTE

How Many OFDMA Parameter for LTE? Which is OFDMA Parameter for LTE ? The width of a Sub-carrier is 15 kHz whatever the bandwidth The bandwidths are: 1.4, 3, 5,...
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OFDMA Parameter for LTE, ofdma, ofdmbandwidth, cdma, fdma, hz, lte, ofdma, ofdma lte, parameter for lte, sub carrier, symbol, telecom

OFDMA Principles in LTE

There are several ways to transmit over the frequency band and to share the resource between several devices.   What is TDMA,CDMA & FDMA ?   1.TDMA • The users...
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OFDMA Principles in LTEcdma, device, fdma, frequency band, gsm, lte, ofdma, resourse, tdma, telecom

How to Reverse Channel works in CDMA

All MS transmit on same frequency but with different PN codes to create different logical channels. Some channels marked for Access are used for signaling and control. While Walsh Codes...
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reverse channel cdma, pn code, walsh codecdma, cell, CHANNEL, pn, reverse

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