Power ramping in LTE

Open loop power control together with optional power ramp-up is used during the random access process at the beginning of the connection until more accurate control information is available. Power loss due to transmission distance depends on to the increase of the distance between NodeB and the UE. In such a case, feedback information from another side is not […]

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Power ramping in LTE, power control, open loop, transmission power, power loss, initial transmission

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 common CDMA system-wide time scale that uses the Global Positioning System (GPS) time scale, which is traceable to and synchronous with Universal Coordinated Time (UTC). […]

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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 component

What is the Result of Incorrect PN Planning in CDMA ?

The design of a PN offset plan for CDMA is comparable to that of a signalling channel frequency plan in analog. The consequences of poor offset planning include the following: Active Set Pilot Interference – This phenomenon would occur in the active area and involve the active search window (SRCH_WIN_A). The interfering signal would need […]

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pn planning cdma, neighbour area cdma, nbr list cdma, signal, bs identification

Wide bandwidths concept for LTE MIMO

One of the unique aspects of LTE is the support of the six channel bandwidths from 1.4 MHz to 20 MHz. To simplify system operation and roaming phones should support all these bandwidths, although effective deployment in any one area may be limited to fewer band width 20 MHz LTE is significantly larger than the […]

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lte, lte signal, reference signal, enb and ue, digital signal processing, phase fitness, filters, amplifiers, ue receiver

Advantages of Intelligent Network (IN)

Concept of Intelligent Network: The introduction of new services and access to the GSM service are based on the concept of Intelligent Network (IN). This is because of the independence between: Conventional call processing handled by the exchange, Mobile radio functions handled by a dedicated server. Dialog between these two is managed by an IN […]

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Intelligent Network (IN), Advantages of Intelligent Network, Mobility management, radio frequencies, radio control, GSM servers

How To Set Pilot Search Window Sizes in CDMA ?

When the handset first powers up, it does an exhaustive search for the best pilot. No windows are used in this process. On the paging channel, the handset learns the window sizes SRCH_WIN_A, N, R and uses them when looking for neighbors both in idle mode and during calls. When a strong neighbor is requested […]

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How To Set Pilot Search Window Sizes in CDMA, search window, pilot set, intercell distances, mobile, evod throughput, tips to increase throughput in evdo, hsd search window, search window table, criateria to set search window

Open loop and close loop testing in LTE

Here I write short notes on how to test open loop and close loop testing in lte and what idea behind it. In open loop no any data send back and in closed loop all relevant data available to both side lets check in some detail. Open and close loop testing in LTE: Open loop […]

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Open loop and close loop testing in LTE, open loop, close loop, loop, lte, source, feedback, receiver, testing equipment, testing of lte, baseband, demodulation

Emergence of Standards-Based Technology

In 1998, the Institute of Electrical and Electronics Engineers (IEEE) formed a group called 802.16 to develop a standard for what was called a wireless metropolitan area network, or wireless MAN. Originally, this group focused on developing solutions in the 10GHz to 66GHz band, with the primary application being delivering high-speed connections to businesses that […]

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Emergence of Standards-Based Technology, interoperability testing, ieee, standards, wimax forum, physical layer, specifications, metropolitan area, interoperability testing, division duplexing

3G Spectrum Allocation

How 3G Spectrum Allocation? 3G Spectrum Allocation is different in different country but mainly its all having as per below figure. ITU has allocated 3G Spectrum Allocation 230 MHz frequency for the 3G mobile communication system IMT- 2000: 1885 ~ 2025MHz in the uplink and 2110~ 2200 MHz in the downlink. Of them, the frequency […]

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3G Spectrum Allocation, itu, downlink band, uplink band, spectrum band, wcdma 3g band

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 sector. 1920 ~ 1980MHz / 2110 ~ 2170MHz Supplementary bands: different country maybe different as per government selling in auction. 1850 ~ 1910 MHz / 1930 MHz […]

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wcdma band, 3g band, 3g frequency, 3g spectrum, 3g band type, wcdma band used

Receiver Design for LTE

The main objective of the study is to take action for the entire measurement receiver. However, many factors can affect the performance of the receiver, such sub-blocks of receipt must be checked on the basis of the first and measurable contributions eliminate or reduce uncertainty. If using multiple receivers, it is necessary to make these […]

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Receiver Design for LTE, Open and closed loop operation, lte receivers, division duplex, lte design, receiver, testing receiver, design receiver, lte models

Basic Test for LTE Transmitter and Receiver Design

LTE already requires fundamental changes in the base and handset and research project due to higher data rates, there is an important signal bandwidth and enhance integration and miniaturization in mobile phones, for example: Need to handle 6 different channel bandwidth from 1.4 to 20 MHz, and both frequency division duplex (FDD) and Time Division […]

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lte test, transmitter lte, receiver lte, lte handset, handset test lte, lte radio test, basic lte handset requirement

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