DIPOL Weekly Review - TV and SAT TV, CCTV, WLAN

Before the 4G - changes among leaders.

The year 2010 promises to be a breakthrough in wireless communications. Everything seems to indicate that the 4G standard will be adopted and practically implemented by the first commercial networks using this technology. The promise of huge investment gives rise to increasing speculation which of the industry tycoons is best prepared to become a world leader in wireless communications. Last year, the leader was Ericsson (36% market share), the second place took Nokia (20%), and the third - Huawei (11%). However, this year brings some significant change to that ranking. According to forecasts, by the end of the year the annual turnover of Ericsson will come to US$ 26 billion, of Huawei - 18.4 billion, and of Nokia - 15.7 billion. The Chinese giant will probably increase sales by 21%, just opposite to Nokia with about 22% drop in the figure.

Is there a chance that the trend of rapid growth of Huawei's market position will continue in the next year?

Huawei is a world leader of TD - LTE technology which has been selected by China Mobile as the basis for the construction of Chinese 4G network. Installation of the infrastructure will start as early in the beginning of 2010. Huawei will be the primary equipment supplier. Already in May, at the Expo 2010 in Shanghai, a pilot 4G network will start operation in China. The potential of the Chinese market may be crucial, but equally important is the winning of the prestigious tender for 4G in Norway. Huawei beat Ericsson in the Nordic market, which was quite a sensation. Advanced talks between Vodafone and Huawei on 4G in the German market may indicate that it will be another success of the Chinese supplier. Similar negotiations are conducted in Spain. Great potential of Huawei allows for rapid growth, so in 2010 it may become a global leader in wireless technologies.

Buddha guards the quality of connections - what is the name of the temple?

The telephone booths with statues of Buddha, visible in the pictures below, are located in a temple complex in the city of Dengfeng. The temples were built in the fifth century, then they were several times destroyed and rebuilt. The most severe devastation (about 90%) took place in 1928, as a result of military operations.
A true renaissance of the temples began in 1982 and was associated with a movie about this place, which was released at that time. The fame of the place steadily grew, the temple complex was attended by more and more tourists. The first government leader who visited this place was Vladimir Putin.
In Dengfeng there is a dozen of sports schools, the largest of which is attended by about 20 000 students. The training and education is particularly useful in the police and army. What is the name of the temple complex with the telephone booths decorated with the statues of Buddha? You can find the answer at the end of this issue.

Software for professional designing of SMATV systems - SatNet 2.0.2.

Network planning and design with the use of a sheet of paper and a pencil is laborious and entails the risk of error. Free software from TERRA - SatNet 2.0.2 - allows to design installations based on the equipment manufactured by the company. The program allows to prepare the project in graphical form, to determine signal levels in all outlets and verify if they are compliant with standards, and to decide whether to use equalization function of the amplifiers. The program enables the user to archive the projects.

You can download SatNet tutorial (2.55 MB) allowing for quick learning of the SatNet 2.0.2 procedures on your own.
The SatNet 2.0.2 software is available here (12.6 MB), in the download section of DIPOL website.

Basic information:

Video surveillance of a small shop.

Below there is an example of CCTV system in a small shop.

DIPOL offers economic devices allowing to record quality video, with possibility of further expansion of the system - analog CCTV cameras CX-412D M10730 and DVR ULTIMAX 204 M72040:

Professional IP CCTV system for the price of an analog one.

Professional and relatively cheap PiXORD IP cameras can be used for building video surveillance system based on computer networks, for the price compared to that of a typical analog CCTV installation.
The P400PoE K1131 camera has the same parameters of the image sensor as the best analog cameras available on the market (1/3" CCD Sony, 540 TVL, 0,1 lx - F2,0), for competitive price.
Each PiXORD camera comes with free professional software pack based on NUUO software, allowing to integrate up to 32 PiXORD devices.The only additional expense is the cost of the computer for software installation. Such a cheap system allows recording video from each of the 32 cameras at speed of 25 fps at Full D1 resolution (independently). The installation can be performed in stages, starting with one camera, ending with as many as 32 cameras.

12 questions for those who plan to build CCTV installation - part 6.

In the last part of the cycle on planning the construction of a CCTV system we should consider transmission security, operation and maintenance of the system.

Application of digital signal processing allows for transmitting the signals over the Internet without the constraints associated with distance limits of analog systems. IP video transmission opens up new possibilities of monitoring remote places, it improves safety and lowers costs. However, already in the design phase, it requires reservation of appropriate telecommunications services (with suitable bandwidth, fixed IP address, QoS etc.).
The transmission of digital video offers many advantages. The main are the ease of transmission and possibility of protection against unauthorized access. Digital technology enables transmission of multiple signals using a single medium (e.g. twisted-pair cable, optical fiber, wireless link). In addition, digital signals can be easily encrypted, making it impossible to be intercepted by unauthorized parties.

To take full advantage of the monitoring system, the staff should be thoroughly trained. The operators should know and be able to use all functions that allow to take full advantage of the system, in various situations. Access to written instructions for the system, including basic procedures in the case of typical problems will allow the operators to solve such problems without calling specialists.

Mechanical devices with moving parts require lubrication, housings - tightness inspection, lenses - cleaning. It is important to clarify who is responsible for the inspections and maintenance. The tasks are often performed by the installation company, after signing a contract for a definite or indefinite period of time.

Quality of Service.

Quality of Service determines the level of service quality offered to network users.
QoS is a set of technologies that allow users to receive a predictable level of network services, among other things: bandwith, delay, jitter, dropped packets, bit error ratio.
QoS guarantees are essential when network resources are insufficient, especially for multimedia applications that stream real-time data, such as VoIP, VTC, IPTV. QoS guarantees play an important role also in the cases where network resources are sufficient, but some services have the highest priority, for example in military or emergency applications.

Wireless access network based on TP-Link devices.

The lack of LAN wiring greatly reduces the functionality of office buildings, warehouses, hotels. Quick, cheap and effective way of solving this problem is to install wireless access network. The network based on ADSL (analog telephone line) and wireless transmission equipment consists of:

In the case of a greater number of users (> 15), the performance of the wireless network may be insufficient. The problem can be solved by creating another wireless network operating on a different channel.

Shaolin Monastery.

The temple complex with the characteristic telephone booths is known as Shaolin Temple. It was discovered for the western world after the making of the "Shaolin Temple" movie, with Jet Li.

We have written about:

Safe cables. Safety regulations for public buildings that house many people (hospitals, schools, theaters) require that during a fire the cabling cannot pose an additional threat to the life or health of the people. The cables have to be halogen free (HF) - they cannot give off toxic gases. When burned, the cables also cannot feed the fire, emit thick or corrosive fumes...
- archive DWR of March 2, 2009

Taps with graded attenuation allow to compensate different distances. Signal level of any TV channel in each subscriber outlet should be between 62 - 80 dBuV. Weaker signals will cause visible "snow" in the picture, stronger ones may be the reason of overdriving the receiving equipment and interference...
- archive DWR of April 7, 2008

Two ways of using TP-LINK TL-WR543G. TP-LINK TL-WR543G N2955 can be used both for wired and wireless access to the Internet.
The TL-WR543G Wireless AP Client Router (N2955) integrates broadband router (for xDSL service or cable modem), 4-port FastEthernet switch, and Access Point...
- archive DWR of June 22, 2009

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