Online English Summarizer tool, free and accurate!
angle (ODA) is based on maximum service probability of low and high traffic volume scenarios.The simulation results indicate that an increase of the antenna height changes expectedly the optimum downtilt angle; 10 m increase in the antenna height corresponds roughly to 1 o increase of the ODA.For all network configuration, ODAs increase as a function of antenna height and decrease as a function of site spacing.Hence, with an optimum downtilt angle, network coverage is guaranteed, and simultaneously, other-cell interference is mitigated as efficiently as possible.For the 3-sectored configurations with 6 o vertical beamwidth, the optimum downtilt angle varies between 4.3 o-8.1 o depending on the network configuration and downtilt scheme.In the 3-sectored configurations with 12o vertical beamwidth, the evaluated optimum downtilt angles range between 3.5 o-10o (Table IV).
angle (ODA) is based on maximum service probability of low and high traffic volume scenarios. Hence, with an
optimum downtilt angle, network coverage is guaranteed, and simultaneously, other-cell interference is mitigated
as efficiently as possible. More detailed description of the definition method of ODA can be found from [15].
In the simulations, all downtilt angles are gradually increased in steps of 2
◦
.
Table IV gathers all optimum downtilt angles for all simulated network configurations. For all network
configuration, ODAs increase as a function of antenna height and decrease as a function of site spacing.
Generally, it can be also observed that the change of ODA from 1.5 km to 2.0 km site spacing than from
2.0 km to 2.5 km site spacing, hence indicating that a small downtilt angle should be always used. Moreover,
with 12◦
antennas, the required downtilt angles are expectedly higher than for 6
◦
antennas.
For the 3-sectored configurations with 6
◦ vertical beamwidth, the optimum downtilt angle varies between
4.3
◦–8.1
◦ depending on the network configuration and downtilt scheme. According to (7) and (8), the corresponding
downtilt angles would have been 0.8
◦–2.5
◦
and 3.8
◦–5.5
◦
. The simulation results indicate that an
increase of the antenna height changes expectedly the optimum downtilt angle; 10 m increase in the antenna
height corresponds roughly to 1
◦
increase of the ODA. On the other hand, site spacing has comparatively
smaller impact on ODAs, especially with larger site spacings. In the 3-sectored configurations with 12◦ vertical
beamwidth, the evaluated optimum downtilt angles range between 3.5
◦–10◦
(Table IV). With definitions of (7)
and (8), the downtilt angles would have been 0.8
◦–2.5
◦
and 6.8
◦–8.5
◦
, respectively. On average, the ODAs are
intuitively higher for the 12◦
than for 6
◦ beamwidth. However, the increase of ODAs is not as huge as one
could expect. One reason for even lower ODAs for 12◦ beamwidth are the interference conditions that differ due
to lower antenna gain and wider vertical spread of antenna pattern. Without any downtilt with 6
◦ beamwidth,
the signal power is more precisely directed towards the boresight, whereas antennas of 12◦ beamwidth provide
Summarize English and Arabic text using the statistical algorithm and sorting sentences based on its importance
You can download the summary result with one of any available formats such as PDF,DOCX and TXT
ٌYou can share the summary link easily, we keep the summary on the website for future reference,except for private summaries.
We are working on adding new features to make summarization more easy and accurate
This rule places minimum responsibility on the seller, who merely has to make the goods available, s...
Macbeth, set primarily in Scotland, mixes witchcraft, prophecy, and murder. Three "Weïrd Sisters" ap...
يشارك القسم بشكل فعال مع مكون تربية الأرز بمعهد المحاصيل الحقلية في تطوير أصناف أرز متحملة للأمراض، ...
(٣) أسرار نجاح العمل أما نجاح العمل فيتوقف على بذل القوى في محالِّها وأوقاتها الملائمة بالحكمة وحسن ...
بدايات سورة الحج تتحدث عن من يصد عن سبيل الله تتحدث عن من جعل أهم هدف وغاية له الصد عن سبيل الله سبح...
أفادت مصادر طبية بمقتل 78 فلسطينيا في قصف إسرائيلي على غزة منذ فجر اليوم بينهم 38 من منتظري المساعدا...
الفصل الأول: الإطار المفاهيمي للمدن الذكية شهدت المدن تطورا تاريخيا كبيرا بدأ منذ نشأتها كمدن كلاسيك...
1. قانون منع سوء معاملة الأطفال ومعالجته (CAPTA) – 1974: يوفر إطارًا لفحص وإبلاغ ومتابعة حالات إساءة...
ان تعاطي المخدرات من التحديات الاجتماعية و الصحية الواسعة التي ينظر إلي من زاوية أخلاقية أو قانونية...
دشن وكيل محافظة حضرموت لشئون مديريات الوادي والصحراء الاستاذ عامر سعيد العامري اليوم الحميس الموافق ...
دراسة ظاهرة المقاومة المكتسبة فى الفطريات نتيجة استخدام المبيدات الفطرية دراسة تأثير نظم الرى المختل...
(٥) المعرفة الكمالية ثبت مما تقدم أن المعارف العلمية والاختبارية والخاصة لازمة للإنسان كل اللزوم؛ لأ...