Estimating Local Mean Signal Power Level in a Rayleigh Fading Environment

نویسندگان

  • Daniel Wong
  • Donald C. Cox
چکیده

Good estimates of local mean signal power level are needed by wireless cellular systems for use in channel access, power control and handoff. Many systems today use weighted sample average estimators which are not optimal in Rayleigh fading environments. The optimal local mean signal level estimator for the Rayleigh fading environment will be derived and compared with the sample average estimator.

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

An Optimal Local Mean Signal Power Level Estimator for Rayleigh Fading Environments - Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International

Wireless cellular systems need good estimates of local mean signal power level for use in channel access, power control and handoff. Many systems today use weighted sample average estimators which are not optimal in Rayleigh fading environments. We derive the optimal local mean signal level estimator for the Rayleigh fading environment and compare it with the sample average estimator.

متن کامل

Effects of Rician Fading and Branch Correlation on a Local-Mean-Based Macrodiversity Cellular System

In a macrodiversity cellular system, switching radio links between base stations cannot be done instantaneously. Thus, branch selection is usually based on the measurement of the slowly varying local-mean power rather than the rapidly varying instantaneous signal power. In this paper, we offer an exact mathematical model to analyze the performance of a local-mean-based macrodiversity cellular s...

متن کامل

Analysis of hybrid selection/maximal-ratio combining in Rayleigh fading

In this paper, we use a novel virtual branch technique to succinctly derive the mean and variance of the combiner output signal-to-noise ratio for hybrid selection/maximal-ratio combining in a multipath-fading environment.

متن کامل

Estimation of System Operating Margin for Different Modulation Schemes in Vehicular Ad-Hoc Networks

In this paper, system operating margin (SOM) is estimated for vehicular ad-hoc networks in absence and presence of Rayleigh fading. The Ad-hoc IEEE 802.11 model is considered for estimating the signal strength and system operating margin. Rayleigh fading was then simulated and system operating margin are estimated in Rayleigh fading environment for different standard modulation schemes. Keyword...

متن کامل

Optimized RMSE Power Allocation for Wireless Image transmission Using binary DPSK Rayleigh Fading Channel

M.Padmaja, K.Prasuna Assistant Professor, VR Siddhartha Engineering College, Vijayawada (A.P), INDIA [email protected] Assistant Professor, Vijaya Institute of Technologyforwomen, Vijayawada (A.P), INDIA [email protected] AbstractOptimized root mean square error plays an important role in the analysis of wireless transmission. In this paper, an optimized power allocation method is con...

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 1999