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In this paper, the measurement system for digital terrestrial television broadcasting is proposed in order to identify the reflection points of the propagation paths. The aim of identifying the reflection points is that they are used for detailed analysis of reception characteristics in the service area using the ray tracing scheme. This can be useful for designing the service area of the SFN gap...
An improvement scheme for degradation of reception characteristics of the digital terrestrial television broadcasting (DTTB) is an important issue. The degradation is caused by multipath effects, thus an analyzing technique for the channel is significant. In this paper, an analyzing technique for the channel delay profile that is obtained from the pilot symbol from the received signal is proposed...
A transparent transport of a microwave environment over an optical 10 Gbps Ethernet based IP network is challenged. Microwaves in a target area are digitized, converted into IP/Ethernet packets at a source station, and then transported to the destination station. The source/destination station could be a remote re-broadcasting or wireless access station to extend the coverage, or just an analyzing...
The concept of the transportation of a microwave environment-a technology that can transport microwaves over an IP network- is discussed. The several possible applications facilitated by this concept are also discussed. A pair of UHF-band microwave/Internet protocol (IP) conversion network interfaces are prototyped, and a unidirectional transport of an integrated service of digital broadcasting-terrestrial...
For a purpose of tuning the operational frequency at UHF-band, a printed meander antenna was discussed for the reception of the terrestrial broadcasting TV. This antenna consists of a meander-line fed by a coplanar waveguide with the finite ground plane. From the analyzed and measured results, it was found out that the operational frequency of this antenna was able to be controlled by changing the...
A printed spiral antenna with a self-complimentary configuration was developed. This antenna consists of spiral shaped metal strips and slots provided on ground planes as their counterparts. For balanced and unbalanced feeds, two types of antenna configurations such as single and twin spirals were fabricated and their antenna performances were investigated. From evaluation of carrier noise ratio of...
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