Slotted ALOHA with Capture in a Mobile Radio Environment

نویسندگان

  • Michele Zorzi
  • Ramesh R. Rao
چکیده

In this paper, we consider a slotted ALOHA protocol with capture, in a mobile communication environment, in the presence of Rayleigh fading and log-normal shadowing. The capture probabilities are computed, along with their limit as the number of colliding packets tends to innnity. Some suucient conditions for this limit to be positive, and therefore for the system to achieve a positive stable throughput, are given in terms of the spatial distribution of the users. Also, various models for this latter distribution are discussed.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Performance evaluation of mobile radio slotted ALOHA with smart antennas

We report an investigation into the effect of using smart antennas on the performance of the slotted ALOHA protocol with capture in a mobile communications environment with Rayleigh and Log-normal fading. Our results demonstrate that by using smart antennas, we can achieve higher performance in terms of capture probability and throughput when compared to a conventional antenna system using the ...

متن کامل

Mobile Radio Slotted ALOHA with Capture and Diversity

In this paper, the Slotted ALOHA protocol in a mobile radio environment, in the presence of Ricean fading, twofold antenna diversity and multiple reception capability, is considered. The capture probabilities and the average throughput are computed, and the issue of stability is addressed. It is shown that diversity can improve the system performance, although only to a certain extent. Some ext...

متن کامل

Retransmission Control in Mobile Radio Slotted Aloha

For the slotted ALOHA protocol in a mobile radio environment, a retransmission control scheme is proposed, and a rigorous analysis is developed to prove the stability of the resulting system. This analysis is shown to apply to virtually any model for the spatial distribution of the users. It is also shown that the use of retransmission control is unavoidable if the network performance predicted...

متن کامل

A Comparison of Cdma, Tdma and Slotted Aloha Multiple Access Schemes in Cellular Mobile Radio Systems

The increasing demand for mobile radio services and the scarce bandwidth available suggest to devote considerable research eeorts to nd more eecient multiple access techniques in order to improve the system capacity. In this work we compare the system performance of three mobile radio systems: the well known TDMA system, which is the basis of the European GSM, the recent CDMA system (a standard...

متن کامل

A UML-based Architectural Model for Performance Analysis of Slotted ALOHA in GSM Radio Networks*

In our research, we are interested in modeling the radio network part of the GSM system in order to apply in-house developed framework for timing and performance analyses. Our approach in both timing and performance analyses was introduced in former works, and is based on applying the proposed techniques on UML-based simulation models of systems’ dynamic specifications. In former work, we intro...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1994