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CDMA Development Group White Paper: 3G Systems
White Papers The objective of this paper is to present the CDMA Development Group's (CDG) view on key topics with respect to third generation (3G) and address some of the more technical aspects of the cdma2000 3G proposal.
[July 19, 2005, 0:00]
CDMA-Gone with the Wind?
White Papers This white paper presents the main issues in the world CDMA market. Lately, there have been many rumors and doubts over the future of CDMA, and these are expected to have an impact on the main CDMA handset manufacturers, especially in Korea and...
[September 20, 2007, 10:08]
CDMA Network Technologies: A Decade of Advances and Challenges
White Papers This paper briefly describes the origins of CDMA technology and the emergence of 3G implementations such as cdma2000 1X and cdma2000 1x EV-DO. The paper concludes with a discussion of some of the technical problems that can occur in CDMA networks...
[March 2, 2004, 11:19]
CDMA 2000 EV-DO Revision B
White Papers Voice traffic is often referred to as CDMA 2000 1X and data as CDMA EV-DO. The CDMA 2000 delivers the highest voice efficiency in the wireless industry, and EV-DO is clearly the market leader for high speed wireless mobile broadband.
[June 16, 2006, 1:00]
CDMA End-to-End Security
White Papers Code Division Multiple Access (CDMA) technology originated from military applications and cryptography, and to date, do not have any report of high-jacking or eavesdropping on a CDMA call in a commercially deployed network.
[October 11, 2005, 3:00]
Smart Antennas for Wireless CDMA Systems
White Papers With a number of 3G systems using CDMA as the preferred transmission scheme, extensive research has been done into ways of improving performance in a CDMA system. To this end, a lot of research has been done in coding, modulation, handoff protocols...
[June 16, 2006, 1:00]
CDMA 1X Handset USB Composite Device
Downloads CDMA 1X Handset USB Composite Device
[May 19, 2004, 8:00]
Authentication and Encryption in CDMA Systems
White Papers This white paper attempts to address the concept of Authentication and Encryption in CDMA systems and the usage of this feature in today's mobile telephony environment. Mobile usage has virtually penetrated every aspect of our daily lives from the...
[January 15, 2008, 1:58]
Power-Control-Based Band Allocation in Multiband CDMA
White Papers Multiband CDMA is useful for constructing DS-CDMA (CDMA) systems over a non-contiguous spectrum. The method by which users are assigned to their respective frequency bands, termed 'band allocation', is an important part of assuring good performance...
[July 24, 2004, 0:00]
MC-CDMA Versus OFDMA in Cellular Environments
White Papers The paper investigates on the one hand, an Orthogonal Frequency Division Multiplexing (OFDM) based Multiple Access scheme (OFDMA), and on the other hand, a Multi-Carrier Code Division Multiple Access (MC-CDMA) scheme.
[February 17, 2006, 0:01]
Telecom Egypt Case Study for CDMA
White Papers Hauwei & ZTE Corporation provide full series of CDMA products for total network solutions including CDMA Network Switching Subsystem (NSS), CDMA Base Station Subsystem (BSS) and CDMA Mobile Terminals.
[July 12, 2005, 0:00]
Over-the-Air Provisioning in CDMA
White Papers CDMA is a digital wireless technology that offers a number of advantages over other mobile communication technologies. Smart Cards, known as R-UIM (Removable User Identity Module), are widely used in CDMA phones these days.
[July 19, 2005, 6:00]
Optical CDMA With Optical Orthogonal Code
White Papers This paper examines optical CDMA communication techniques with optical orthogonal codes. Simulations that show the desired properties of theses codes and their use in optical CDMA are reported in the paper.
[October 13, 2005, 3:00]
On MIMO Signal Processing for Adaptive W-CDMA and OFDM Wireless Transceivers
White Papers The extensions are applied and analyzed on commonly used wideband systems such as W-CDMA and OFDM. Simulation study compares cases with one and two transmit/receive antennas and shows that BER of W-CDMA system consistently improves by exploiting...
[July 21, 2005, 6:00]
Spectral Efficiency of Multicarrier CDMA
White Papers This paper analyzes the spectral efficiency (sum-rate per sub-carrier) of randomly spread synchronous multi-carrier code-division multiple access (MC-CDMA) subject to frequency-selective fading in the asymptotic regime of number of users and...
[July 26, 2005, 6:00]
Performance Degradation of OFDM and MC-CDMA to Carrier Phase Jitter
White Papers This paper analyses the effect of carrier phase jitter on the performance of OFDM and MC-CDMA waveforms. Assuming a multicarrier downlink through an AWGN channel, this paper investigates the impact of jitter phase models on the SNR degradation.
[April 11, 2007, 1:01]
Novell Case Study: QUALCOMM CDMA Technologies
White Papers QUALCOMM Incorporated is a leader in developing and delivering innovative digital wireless communications products and services based on the company's CDMA digital technology. After evaluating the AMD Opteron processor, QCT decided to move much of...
[April 13, 2007, 1:01]
MC-CDMA for Next Generation Systems: The IST Projects Matrice and 4MORE
White Papers Matrice researches MC-CDMA for beyond 3G cellular systems. In this paper the approach and results of the project Matrice are presented. This contribution includes a description of the baseband system and results for Multi User Detection in uplink...
[October 11, 2005, 0:00]
Blind Detection of CDMA Signals Based on Kalman Filter
White Papers This paper studies detection of CDMA signals based on Kalman filter. In the absence of both training symbols and the knowledge about multipath channel parameters, the system can be exactly fit into the Kalman model.
[November 8, 2006, 0:00]
