ENGINEERING RESEARCH PAPERS

CDMA-code division multiple access 2016 IEEE PAPER




Second-Order Cone Programming Based Robust Blind Multiuser Detector forCDMA Systems
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Abstract In this paper, we propose a robust blind multiuser detector for code-division multiple access (CDMA) systems against signature waveform mismatch (SWM) derived from the influences of time asynchronization or channel distortion. This blind detection method with

Robust CDMA Receiver Design under Disguised Jamming
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–Due to the symmetricity between the jamming and authorized signal, the receiver is fully confused and cannot really distinguish the authorized signal from jamming.–A stronger result shows that the capacity of the system is zero!–The result cannot be changed by bit-

RRNS Based Error Detection and Correction in CDMA using Chinese Remainder Theorem
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ABSTRACT In communication systems corruption of data and hacking of data is unavoidable. These are the major problems we are facing in communication system. This paper presents an enhanced multiple error detection and correction scheme based on the

Paper Reduction And Total Inter-Carrier Interference Cancelled Multiuser Detection In CFO Corrected CDMA-OFDM With Elliptic Curve Cryptography
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Abstract: The Code division multiple accesses with Orthogonal Frequency Division Multiple Modulation (CDMA-OFDM) system has been considered as a strong communication system for the next generation wireless communication performs excellent in noisy multipath

DOWNLINK: PERFORMANCE OF MIMO-CDMA SYSTEM USING NON-LINEAR DETECTOR
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Abstract:In this correspondence, we present the performance of uncoded multiple-input multiple-output (MIMO) Code division multiple access scheme (CDMA) system for downlink (DL) transmission over correlated frequency-selective channel. In a multi user DL

Design and Performance Scrutiny of Sixteen Users O-CDMA Encoding System using Ultrashort Pulses
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Abstract The main objective of this paper is to design and performance analyses of 16 users OCDMA (optical code division multiple access) encoding system using ultrashort pulses. In optical code division multiple access system, many users share the same transmission

Design Four Transmit Antennas STBC-MC-DS-CDMA System Based On DWPT In Flat Fading Channel
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ABSTRACT This paper provides the detail about the two main applications of multicarrier direct sequence code division multiple access (MC-DSCDMA) which are fixed MC-DS- CDMA and Mobile MC-DS-CDMA. Fixed MC-DS-CDMA delivers point to multipoint

Characterization of Sector Clock Biases in Cellular CDMA Systems
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ABSTRACT The clock bias of cellular code division multiple access (CDMA) base transceiver station (BTS) sectors is characterized. The clock biases of individual sectors and the discrepancy between the clock biases of different sectors of the same BTS cell are

Performance Evaluation of Interleaved Image Transmission over DCT-MC-CDMASystem
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Abstract-Recently, image transmission takes place as an important research branch in multimedia broadcasting wireless communication systems. Interleaving techniques are required to combat the problems caused by the multipath fading environment in

A Review on MC-CDMA in Frequency Domain in Mobile Environment
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Abstract:Multi-carrier code division multiple access is an attractive choice for high speed wireless communication as it mitigates the problem of inter symbol interference and also exploits frequency diversity. The work described in this paper is my effort in this direction.

PERFORMANCE EVALUATION OF MC-CDMA SYSTEM WITH MRC AND EGC DIVERSITY TECHNIQUES OVER RAYLEIGH FADING CHANNEL
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(MC-CDMA) is a promising technique for providing high data rate wireless communication. In this paper we evaluate the performance of MC-CDMA system with walsh spreading codes over Rayleigh fading channel. The performance of MC-CDMA system is evaluated in

Anti-Jamming CDMA Receiver Design for Land-Mobile Satellite Channels Exploiting Low-Dimensionality
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Abstract This paper considers satellite communication systems under land-mobile satellite channels where the uplink is exposed to land-based jamming attack, and the downlink has weakness in missing data due to deep shadowing and high path-loss. To design an anti-

Performance analysis of Optical CDMA System Based on Zero Cross Correlation (ZCC) Code using OFDM Modulation
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Abstract:-In order to increase the number of users and data rate, and to reduce the impact of multi access interference (MAI), this study propose the optical code division multiple access (OCDMA) systems with orthogonal frequency division multiplexing modulation (OFDM)

Linear Multiuser Detection for Synchronous DS-CDMA Systems
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CDMA) is a popular wireless technology. This system suffers from Multiple Access Interference (MAI) caused by Direct Sequence users and Near–far effect. Multi-User Detection schemes are used to detect the users' data in presence of MAI and Near-far

Multiuser Detection for CDMA System with Optimization of Detector using ANN
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Abstract: Code division multiple Access is a widely used channel access method by radio technologies. This method is useful as many receivers can send data simultaneously over a single communication channel. Various multi detection methods are used for the purpose.

Slotted Random Access Protocol with Dynamic Transmission Probability Control in CDMA System
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Abstract:In packet radio networks, simultaneously transmitted packets act as multiple access interference. In order to maximize the system performance, the number of simultaneously transmitted packets should be kept at a proper level. This paper proposes

Performance Analysis of a MIMO MC-CDMA Wireless Communication System Implementing Spatial Domain Noise Reduction Techniques with MMSE Signal
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Abstract:Multi Carrier CDMA (MC-CDMA) technique has become increasingly popular in wireless communications, mainly due to its high spectral efficiency, robustness to frequency selective fading and flexibility to support integrated applications. This paper incorporates a

Modelling and Analysis of Call Blocking Probability in an Established CDMAWireless Network
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ABSTRACT Millions of mobile subscribers are nowadays denied access to mobile network due to insufficient spectrum allocated to the networks by the communication control agencies. Since the spectrum is a scarce resource that cannot easily be created for its

Narrow-band Interference Suppression in Wavelet Packet Multirate Multicarrier Multicode CDMA System
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Abstract: Multicode (MCD) scheme can be used to transmit information with Multirates (MR) in Multicarrier Code-Division Multiple Access (MC-CDMA) system. Since wavelet packets (WPs) have lower sidelobes compared with sinusoidal carriers, then systems which use

Color Image Retrieval with ZF Signal Detection under Spatial Domain Noise Reduction Techniques over a MIMO MC-CDMA Wireless Communication System
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Abstract:This paper incorporates a comprehensive BER simulation study undertaken on the effectiveness of a channel encoded multiple-input multiple-output multi-carrier code division multiple access (MIMO-MC-CDMA) wireless communication system on color

Analysis of DSSS CDMA System for Varying Number of Users
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Abstract Performance of Direct sequence spread spectrum code division multiple Access (DSSS CDMA) under the presence of multiple users is addressed in this Engineering report. A system model for DSSS–CDMA, Quasiorthogonal spreading code is developed.

ASIC Implementation of CDMA Transmitter using VHDL
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Abstract: In this paper direct sequence spread spectrum principle based code division multiple access (CDMA) transmitter has been designed in VHDL for FPGA.target is to design the transmitter circuit consisting of user data signal, PN sequence generator (

Simulink Modelling of the Majority Pseudo-noise Sequence Acquisition Method for Multi-Carrier CDMA
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Abstract: In this article we propose majority pseudo-noise sequence (PNS) acquisition method for multi-carrier direct sequence code division multiple access (MC-DS-CDMA) communication systems, that allows for low hardware requirements and able to operate in

(1994). A novel interference rejection scheme for DS-CDMA using adaptive noise cancellation. In ICCS, Singapore, Nov.(Vol. 2, pp. 364-368). Institute of
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Abstract This paper proposes a novel solution to the interference cancellation problem in mobile Direct Sequence Code Division Multiple Access (DS-CDMA) systems. Conventional adaptive interference cancellation techniques rely on a training sequence to update the

Optimum Detection of CDMA
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ABSTRACT Here we describe methods of detection of Code Division Multiple Access signal against Gaussian noise. We transmit differentially encoded signal and in the receiver, we do signal processing to reduce noise injected by the mixer or RF front end. Similar noise

NONLINEAR AMPLIFIER DISTORTIONS IN DS-CDMA SYSTEMS
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ABSTRACT A well-known feature of the DS-CDMA technique is its small sensitivity to nonlinear distortions with respect to multicarrier systems. Indeed, when phase-shift keying (PSK) modulations are used, the single-user DS-CDMA signal is characterized by an

Iterative Detection Method for CDMA-Based
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Abstract. Digital fingerprinting of multimedia data involves embedding information in the content signal and offers the traceability of illegal users who distribute unauthorized copies. One potential threat to fingerprinting system is collusion, whereby a group of users

Noncoherent Spectral Optical CDMA System Using 1-D Active Weight Two Code Keying Codes
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Abstract-We propose a new family of one-dimensional 1-D active weight two code keying (TCK) in spectral amplitude coding (SAC) optical code division multiple access (OCDMA) networks. We use encoding and decoding transfer functions to operate the 1-D active

A New Set of Uniquely Decodable Codes for Overloaded Synchronous CDMA
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Abstract In this paper, we consider the designing of a new set of Uniquely Decodable Codes (UDC) for uncoded synchronous overloaded Code Division Multiple Access (CDMA) for the number of codes exceeding the assigned code length. For the construction, the proposed

Compressed Image Authentication using CDMA Watermarking and EMRC6 Encryption
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Abstract This paper proposes a robust watermarking technique called Code division Multiple Access (CDMA) which is used to provide authentication to medical images. CDMA is more resistant to attack when compared with other spatial domain schemes. The system is

Multi-group Synchronization in 1D-Bernoulli Chaotic Collaborative CDMA
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Abstract Code-Division Multiple Access (CDMA) has played a remarkable role in the field of wireless communication system and it is still addressing its capacity and security requirements. Collaborative multi-user transmission and detection is a contemporary

Single Packet Transmission for Short Message and Multislot Scheduling for WWW Packet Transmission in a TDD DS-CDMA Multicellular Network with a
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Abstract In this paper, considering a multicellular Time-Division Code-Division-Multiple- Access (TDCDMA) system, it is evaluated the performance of a polling Media Access Control (MAC) protocol integrated with an optimal broadband adaptive antenna (BAA)

Cooperative Co-evolutionary based MUD for SLT-MC-CDMA system
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Multicarrier Code Division Multiple Access (MC-CDMA) systems are effective solution for fulfilling high data rate demand of future networks. The Alamouti's space time coding with MC-CDMA system is used. In this paper, cooperative co-evolutionary (CC) techniques

Implementation of a conjugate matched filter adaptive receiver for DS-CDMA. In Unknown.(Vol. 2, pp. 369-373). Institute of Electrical and Electronics Engineers
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Abstract The implementation of a Conjugate Matched Filter receiver based on Adaptive Koise Cancellation (CMFANC) techniques for asynchronous Direct Sequence Code Division Multiple Access (DS-CDhIA) mobile radio is described. The system employs a Recursive

Interference cancellation with MMSE equalization for the downlink MC-CDMAsystems
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Abstract: The Multi-Carrier Code Division Multiple Access (MC-CDMA) is becoming a very attractive multiple access technique for high-rate data transmission in the future wireless communication systems. MC-CDMA systems transmitting over multipath channels suffer

PERFORMANCE ASSESSMENT OF CHAOTIC SEQUENCE DERIVED FROM BIFURCATION DEPENDENT LOGISTIC MAP IN CDMA SYSTEM
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ABSTRACT In CDMA system, m-sequence and Gold codes are often utilized for spreading- despreading and scrambling-descrambling operations. In a previous work, a design framework was created for generating large family of codes from logistic map, which have

Fast Fading in Multi-User DS-CDMA Systems
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Abstract A sliding window decorrelating algorithm is developed. It is shown to be near-far resistant both in A WGN and fast fading environments. The algorithm is of particular relevance to base stations in Multi-User DS-CDMA rnobile radio networks, and is shown

Performance Analysis of CDMA, OFDM UWB using Smart Antenna
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Abstract CDMA, OFDM and UWB are the most developing technologies in modern mobile communication. OFDM is a parallel transmission scheme, where a high rate serial data stream is split up into a set of low rate sub streams, each of which is modulated on a

Multi Channel Multi Clock Frequency Speed Rate Real Time Industrial Standard Parallel PRBS CDMA Transceiver Array ASIC SOC Card Design For Ultra High
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The Aim is for HDL Design Architecture and Implementation of Multi clock frequency synchronized real time industrial standard parallel Hi-tech PRBS CDMA Transceiver Bus

Implementation of Equalization Channel Estimation for OFDM CDMA
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Abstract In this paper three systems are joined together in order to mitigate distortion effect caused by multipath fading. Those systems are; space time block coding (STBC), code division multiple access (CDMA), and orthogonal frequency division multiplexing (OFDM).

A Radon Mapped Discrete Wavelet Transform Based Algorithm with Channel Compensation for MC-CDMA System in Fading Channels
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Abstract: The proposed work is aimed at improving bit error rate (BER) performance and spectral efficiency, increasing data rate, reducing intersymbol interference (ISI) and interchannel interference (ICI) of a Multicarrier CDMA (MCCDMA) system. Implementation

LINEAR MULTIUSER DETECTION FOR A DS-CDMA SYSTEM
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ABSTRACT DS-Code division multiple access is considered as the third generation of cellular mobile used in interim standard 95 (IS-95)[1] and it is currently being standardized for universal mobile telecommunication systems (UMTS). CDMA offers attractive features,

Multi-user Detection with Different Linear Equalizers for the Downlink MIMO MC-CDMA Systems over Frequency Selective Fading Channel
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Abstract: Modern wireless communications require an efficient spectrum usage and high channel capacity and throughput. Multiple input and multiple output (MIMO), Linear equalizers, multi-user detection (MUD) and multicarrier code-division multiple access (