An Adaptive SIC Technique in DS-CDMA using Neural Network

نویسندگان
چکیده

برای دانلود رایگان 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

Analysis of an adaptive SIC for near-far resistant DS-CDMA

A new multiuser detection scheme is proposed which employs the adaptive minimum mean square error (MMSE) detection in combination with the successive interference cancellation. Through the theoretical analysis and the numerical examples, it is shown that the proposed detector provides a superior performance to the existing ones in terms of the asymptotic multiuser efficiency (AME) and the bit e...

متن کامل

Adaptive Technique for CI/MC-CDMA System using Combined Strategy of Genetic Algorithms and Neural Network

Multicarrier Code Division Multiple Access (MC-CDMA) is one of the most promising techniques for high bit rate and high user capacity transmission in future broadband mobile services. The use of carrier interferometry (CI) codes further improves this user capacity relative to the conventional spreading codes. Genetic Algorithms (GA) may be used to find the optimum transmitted powers that maximi...

متن کامل

An Efficient Adaptive Cell Sectoring Technique for Non-Uniform Traffic in DS-CDMA Systems

Cell sectorization has been shown as a promising technique to improve the overall capacity in direct sequence code division multiple access (DS-CDMA) systems. It has been further demonstrated that the use of adaptive antenna arrays with dynamic cell sectoring is particularly suitable for non-uniformly distributed users. In this paper, we first re-formulate cell sectoring into an optimization pr...

متن کامل

Joint SIC and Relay Selection for Cooperative DS-CDMA Systems

In this work, we propose a cross-layer design strategy based on a joint successive interference cancellation (SIC) detection technique and a multi-relay selection algorithm for the uplink of cooperative direct-sequence code-division multiple access (DS-CDMA) systems. We devise a low-cost greedy list-based SIC (GL-SIC) strategy with RAKE receivers as the front-end that can approach the maximum l...

متن کامل

Adaptive Channel Estimation in DS-CDMA Systems

The accuracy of channel estimation (CE) significantly affects the performance of the coherent rake receiver in DS-CDMA systems. It is desirable to employ a CE scheme that can provide good estimation performance and fast tracking the channel fading with reduced complexity. Such a CE scheme needs to employ a so-called channel estimation filter (CEF) that can effectively reduce the noise effect ac...

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: Procedia Engineering

سال: 2012

ISSN: 1877-7058

DOI: 10.1016/j.proeng.2012.01.963