Enhancement of Convergence Properties of Adaptive CDMA Receiver over Rayleigh Flat Fading Channel

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Adaptive Step Size RAKE Receiver for DS/CDMA Communications Over a Rayleigh Fading Channel

Despite its simplicity, the stochastic gradient method used by the majority of adaptive algorithms, e.g. the LMS algorithm, has a slow convergence speed, thus limiting its use in mobile applications operating in a time-varying channel. A blind adaptive step size algorithm has been proposed in [3] in order to enhance the convergence speed of a stochastic gradient based adaptive algorithm in an A...

متن کامل

Performance Evaluation of Mc-cdma System over Rayleigh Fading Channel

Multi Carrier Code Division Multiple Access (MC-CDMA) is a well known technique for high speed wireless data transmission .Two advanced technology was included in the MC-CDMA structure, such as orthogonal frequency division multiplex (OFDM) and the code division multiple access (CDMA),so that it benefits from the robustness of OFDM against multipath environment and from the capability of multiu...

متن کامل

Multi-Carrier CDMA in Rayleigh Fading Channel

Abstract: The application of Wiener filtering to the detection of Multi-Carrier Code Division Mult iple Access (MC-CDMA) signals is analyzed. An analytical model is developed to evaluate an MCCDMA system with a very large number of subcarriers. This model is compared with simulations for 8 and 64 subcarriers. Simulation results are also presented on the effect of correlated fading (in the frequ...

متن کامل

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 کامل

Simulation Based Performance Analysis of MC- CDMA and CDMA over Rayleigh Fading Channel

Multicarrier Code Division Multiple Access Schemes (MC-CDMA) have been recently introduced in existing CDMA based systems to improve security, data transmission rate and to minimize Inter Symbol Interference (ISI). CDMA experiences severe multipath fading which badly affects its performance. By transmitting identical narrowband DirectSequence (DS) waveforms using frequency diversity, in paralle...

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

ژورنال

عنوان ژورنال: International Conference on Aerospace Sciences and Aviation Technology

سال: 2011

ISSN: 2636-364X

DOI: 10.21608/asat.2011.23384