Analysis of Erlang Capacity for Voice/Data DS-CDMA Systems with the Limited Number of Channel Elements(Special lssue on lnnovative Mobile Communication Technologies at the Dawn of the 21^<st> Century)
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概要
- 論文の詳細を見る
In this paper, we propose an analytical procedure for the Erlang capacity in the reverse link of the DS-CDMA systems supporting voice and data services with the limited number of channel elements. Especially, we focus on IS-95B type systems with sectorized directional antenna that support the medium data rates for data traffic by aggregating multiple codes in both directions, to and from the mobile device. For the performance analysis, a 6-dimensional Markov chain model is developed, and the Erlang capacity is depicted as a function of the offered traffic loads of voice and data. The call blocking is caused not only by the scarity of channel elements that perform the baseband spread spectrum signal processing for the given channel in the base station, but also by insufficient available channels per sector. The effect of the different Grade of Service (GoS) requirements on the Erlang capacity is observed, and the optimum values of the system parameters such as channel elements are selected with respect to the Erlang capacity. Furthermore, we expand our approach to the multi-FA systems that support multiple CDMA carriers more than one. It is observed that Erlang capacity for a high FA can be well estimated through the linear regression with the Erlang capacity results of low FAs.
- 社団法人電子情報通信学会の論文
- 2001-03-01
著者
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Koo Insoo
University Of Ulsan (uou)
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Koo Insoo
Department Of Information And Communications Kwang-ju Institute Of Science And Technology (k-jist)
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Koo Insoo
The Multimedia Communications System Laboratory Department Of Information And Communications Kwang-j
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Koo Insoo
Multimedia Communications System Laboratory Department Of Information And Communications Kwang-ju In
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Koo Insoo
Multimedia Communication Systems Laboratory Gwangju Institute Of Science And Technology
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Yang J
Department Of Electronic Engineering Tsinghua University
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Kim Kiseon
Gwangju Inst. Of Sci. And Technol. (gist) Kor
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Kim Kiseon
The Multimedia Communication System Laboratory Department Of Information And Communications Kwangju
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YANG Jeongrok
Korean Intellectual Property Office
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YANG Jeongrok
the Multimedia Communications System Laboratory, Department of Information and Communications, Kwang
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Kim Kanghee
Multimedia Communication System Laboratory Department Of Information And Communications Gwang-ju Ins
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