TX RX for telecommunications

𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐕𝐚𝐜𝐚𝐧𝐜𝐲

𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐬 𝐚𝐭 𝐎𝐩𝐞𝐫8𝐈𝐜𝐭 𝐂𝐨𝐦𝐩𝐚𝐧𝐲

𝑻𝒆𝒄𝒉𝒏𝒊𝒄𝒂𝒍 𝑹𝒆𝒒𝒖𝒊𝒓𝒆𝒎𝒆𝒏𝒕𝒔 :

✅ Good knowledge of Mobile Package network elements.
✅ Familiarity with RAN equipment vendors (Huawei, Nokia).
✅ Experience with installation standards (tower works, cabling, grounding, power systems, antenna alignment).
✅ Strong knowledge of electromechanical parts in the telecom field (generators, rectifiers, air-conditioners, fire panels, access panels, HVAC panels).
✅ Good knowledge of civil works and site types (ODC, Shelter) and tower structures (Greenfield, RDV, RDU, RT, Monopole).
✅ Strong knowledge of HSE rules (working at height, PPE usage, site access).

𝐒𝐨𝐟𝐭 𝐒𝐤𝐢𝐥𝐥𝐬 :

✅ Strong documentation and reporting skills (Excel, PowerPoint, Word; Power BI is a plus).
✅ Effective communication with FLM teams.
✅ Ability to work under SLA-driven pressure.
✅ Flexibility and passion to learn.
✅ Fast response and problem-solving skills.
✅ Ability to work independently and take immediate decisions.

"𝐑𝐞𝐪𝐮𝐞𝐬𝐭𝐞𝐝 𝐂𝐚𝐧𝐝𝐢𝐝𝐚𝐭𝐞𝐬"

Engineers :

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🔹 1–2 Years of Experience

📩 𝐀𝐩𝐩𝐥𝐲 𝐍𝐨𝐰!

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https://txrxtech.blogspot.com/2023/04/adaptive-modulation-spectral-efficiency.html

Telecommunication telecommunications

https://txrxtech.blogspot.com/2023/04/pdh-sdh-ericsson-data-httpswww.html

Telecommunication telecommunications

LIFI ❤️🙂

Microwave Transmission Technology Fundamentals
about frequency regulation and equipment standards.

International Spectrum Recommendations and Equipment Standards applicable to Microwave Systems
The role of National Regulation Authorities Spectrum Licenses and the License Application Process
Radio Channels
This frequency range is the natural resource available for radio communication.
To make the most of this limited resource it is necessary to regulate and harmonize the use of it.
This regulation cannot be handled by each country alone.

Radio signals don’t stop at national borders. Also, agreements about international services are needed. Therefore the harmonization work is shared between international regulators, or standardization bodies, and national authorities.
Good examples of this are GSM and UMTS where standardization means that the same mobile devices can be used in almost every country. Travelers carry and use their own mobile devices when visiting other countries.

The GSM standardization also gives the user as well as the network operator the possibility to choose equipment from different manufacturers. Thus, GSM standardization has helped create a global market for mobile phones and network equipment.
Other examples of where world-wide standardization is essential are air traffic control, ship to shore and ship to ship communication, WiFi and satellite orbits.
Spectrum management aims to prevent interference between services and interference between users within the same service.
Interference can occur when two transmitters use the same frequency. They can disturb each other and both services can become unavailable. Spectrum management assigns frequencies so that this will not happen, for example by making sure that stations that are close to each other don’t use the same frequency.
Frequency assignments also have to ensure the efficient use of the spectrum.

spectrum standards

In order to separate different transmitters, frequency bands are subdivided into sections called channels.

In this post we will see which main frequency bands there are for microwave transmission and how they are divided into channels.

Remember, this assignment is done by ITU-R and the World Radio communication Conference.

The bands which are indicated by blue color are the traditional bands which have been in use for long time. They are quite heavily used today. In some countries it can be hard to find free spectrum for new deployments in these bands.
Because of this, new bands have been assigned. Quite recently the bands 42, 60 and 80 gigahertz were opened by the World Radio communication Conference.
The 50, 52 and 55 gigahertz bands are assigned for future microwave deployments……and the 95 gigahertz band is currently under study by the standardization bodies for future deployment as well.
The ITU-R publishes one recommendation document per frequency band.
These recommendations specify high and low band ends as well as channel arrangement. Alternative channel arrangements, or band limits, which are applied by other standardization bodies, like ECC, are often referred to in annexes to the main recommendation.
ITU documents are numbered. The document numbers for the ITU-R channel arrangement recommendations start with the letter F.
The ITU-R recommends Frequency Division Duplex for most fixed services.
Frequency Division Duplex means that one channel is assigned for communication in each direction. In this way the system can transmit simultaneously in both directions. Together these two channels form one channel pair.
A channel pattern is created by equally dividing the frequency band into a lower and an upper half band. Each channel pair will consist of one channel in each half band.
The difference between lower and upper channel center frequency is the same for all channel pairs within a certain channel pattern. It is called duplex frequency or duplex distance.
Channels in the lower half band are labeled f 1 to f 5. Channels in the upper half band are labeled f prime 1 to f prime 5.
Each channel pattern specifies channel spacing between the center frequencies of adjacent channels. Channel spacing is always the same in upper and lower half band.

transmission technology fundamentals SDH & PDH

Let’s start with the Plesiochronous Digital Hierarchy, PDH
Many years ago there was a need to make telephone calls digital.
Since our speech is analog, it has to be converted into a digital bit stream.
To do this, samples of the analog signal are taken and represented as numbers. Expressed in binary digits, every sample uses 8 bits. To gather all information in a normal conversation, phone services normally use 8000 samples per second. This way, we need a data stream of 64 kbit/s to transport one telephone call.
That is the reason why 64kbit/s data streams are frequently used in telecommunications.



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