TITLE:
Call Admission Control in HAP W-CDMA Cellular Systems
AUTHORS:
Behnaz Behzadi
KEYWORDS:
High Raised Platforms; Call Admission Control; Quality of Services; Power Control Defects
JOURNAL NAME:
International Journal of Communications, Network and System Sciences,
Vol.6 No.8,
July
26,
2013
ABSTRACT: Among various radio sources which control
different dependencies/functions, in this article, we will talk about the Call
Admission Control (CAC), and we are supposed to confine our concentration on
W-CDMA which is based on high raised platforms, since during the recent years
remarkable amount of attention has been focused on platforms located in
stratosphere layer [1]. Firstly, we study the capacity of uplink from HAP (High
Altitude Platform) W-CDMA and we’ll work on estimation and power control
defects in a new conversation added to current conversations. We’ll enhance the
Call Admission Control (CAC) based on the side effects of power control defects
and users’ stimulus and then compare the CAC which has been measured by using
of momentary energy on bit in the spectral density form (Eb/N0).
Then we examine the mentioned charts for two different criteria which the
decision will be made by these criteria in order to decide if exchanged calls
are to be admitted or not. The first criterion is based on the
minimum of (Eb/N0) of the first row cells meanwhile
the second criterion is based on the average of (Eb/N0)
of first row-cells.