Performance Evaluation for Cellular CDMA
نویسندگان
چکیده
In this paper, we consider the performance of a cellular radio direct-sequence code-division multiple access system. The base-to-mobile link is modeled as a flat Rayleigh fading channel, with all signals transmitted from a given base station fading in unison. For the mobile-to-base link, we use a similar model, except that the waveforms from all users are assumed to experience independent fading. Finally, we show the effects of imperfect power control.
منابع مشابه
Bit Error Performance for Asynchronous Ds Cdma Systems Over Multipath Rayleigh Fading Channels (RESEARCH NOTE)
In recent years, there has been considerable interest in the use of CDMA in mobile communications. Bit error rate is one of the most important parameters in the evaluation of CDMA systems. In this paper, we develop a technique to find an accurate approximation to the probability of bit error for asynchronous direct–sequence code division multiple–access (DS/CDMA) systems by modeling the multipl...
متن کاملThroughput Improvement of STS-Based MC DS-CDMA System with Variable Spreading Factor
The throughput enhancement of Space-Time Spreading (STS)-based Multicarrier Direct Sequence Code Division Multiple Access (MC DS-CDMA) system is investigated in this paper. Variable Spreading Factor (VSF) is utilized to improve the data throughput of the system. In this contribution, an analytical approach is proposed to compute a new expression for the Bit Error Rate (BER) performance of t...
متن کاملPerformance Evaluation of the Forward Link of a CDMA Cellular System
− In this paper, we present the results of evaluating the performance of the forward link of a CDMA cellular radio system. We use a semianalytical approach consisting of the waveform level simulation of the analog channel followed by the hidden Markov modeling of the discrete channel. The performance parameters of the discrete channel were evaluated analytically using the hidden Markov model an...
متن کاملFrequency-Domain Equalization for MC-CDMA Downlink Site Diversity and Performance Evaluation
Similar to direct sequence code division multiple access (DS-CDMA), site diversity can be applied to a multicarrier-CDMA (MCCDMA) cellular system to improve the bit error rate (BER) performance for a user with weak received signal power, thus resulting in an increased link capacity. In this paper, the downlink site diversity reception using frequency-domain equalization based on minimum mean sq...
متن کاملA Simulation Testbed for Performance Evaluation of Open Loop Power Control Algorithms for Cellular CDMA
Power control algorithms are very important for increasing the average traffic and quality of service in CDMA systems. Recently some interesting open loop power control schemes, namely ‘Power Truncation’ and ‘Power Limitation’ have been proposed. The paper describes a simulation testbed developed for carrying out performance studies on the two algorithms. It also verifies some of the analytical...
متن کاملAdaptive Supporting Prioritized Soft Handoff Calls for Power-Controlled DS-CDMA Cellular Networks
We present feedback control techniques to intelligently support priorities of soft handoff calls during call admission control (CAC) in power-controlled DS-CDMA multicellular networks. We design a classic proportional controller to dynamically solve resource management problems, which arise during run-time adaptation, via continuously monitoring real-time system performance to adjust system par...
متن کاملذخیره 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 ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- IEEE Journal on Selected Areas in Communications
دوره 10 شماره
صفحات -
تاریخ انتشار 1992