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Wideband Code Division Multiple Access (W-CDMA)
White Papers Wideband code division multiple access (W-CDMA) is a CDMA channel that is four times wider than the current channels that are typically used in 2G networks in North America. European Telecommunications Standards Institute (ETSI) decided to choose...
[January 1, 1970, 0:59]
W-CDMA V. CDMA2000
White Papers This white paper compares two methods, W-CDMA (Wideband-CDMA) and CDMA2000. Wideband-CDMA (W-CDMA), the transmission technology for third generation (3G) UMTS mobile communication, can be implemented by migrating via GPRS and EDGE on the 2G network...
[January 1, 1970, 0:59]
W-CDMA Vs. CDMA2000
White Papers This white paper compares two methods, W-CDMA (Wideband-CDMA) and cdma2000. Mobile communication is set to be one of the key technologies of the 21st century. Mobile phones have not only gained currency and acceptance worldwide, but did so with a...
[January 1, 1970, 0:59]
Simulation Of A Dual-Mode EDGE /W-CDMA Receiver With Digital IF Down Conversion
White Papers This paper presents a simulation of a dual mode receiver with special emphasis on the digital IF (Intermediate Frequency) for W-CDMA (Wide band Code Division Multiple Access) and EDGE (Enhanced Data Rates for GSM Evolution) formats.
[January 1, 1970, 0:59]
Performance Analysis Of Space-Time Transmitter Diversity Techniques For W-CDMA Using Long Range Prediction
White Papers This paper examines feasibility of several transmitter diversity techniques and precoding for the 3rd generation Wideband CDMA (W-CDMA) systems. Transmitter diversity in the downlink of Code Division Multiple Access (CDMA) systems achieves similar...
[January 1, 1970, 0:59]
A Space-Time Pre-RAKE Transmitter Diversity Method For W-CDMA Using Long Range Prediction
White Papers This paper examines feasibility of several transmitter diversity techniques for the 3rd generation Wideband CDMA (W-CDMA) systems. Transmitter diversity in the downlink for Code Division Multiple Access (CDMA) systems provides a means to achieve...
[January 1, 1970, 0:59]
Design Of Integrated Gateway System's Configuration For Wireless-Internet Service In CDMA2000 And W-CDMA
White Papers This paper proposes the integrated gateway system that is named A-MiDAS(Advanced-Mobile Internet Data Access System) and provides simultaneous packet service in cdma2000 and W-CDMA, and presents the method to design the software configuration for...
[January 1, 1970, 0:59]
Performance Evaluation Of TCP Under Dynamic Allocation Scheme For Down Link Transmission Rate In W-CDMA Systems
White Papers W-CDMA standardized in 3GPP (standardizing IMT-2000) allows dynamic allocation of transmission rates to flows over a wireless link in response to changing link condition for each flow, which is thought to be essential for next generation mobile...
[January 1, 1970, 0:59]
Reliable W-CDMA Network Design
White Papers This paper investigates the W-CDMA network design problem with reliability considerations. A design model that maximizes revenue net the cost of building and maintaining the network infrastructure to provide reliable communication subject to...
[January 1, 1970, 0:59]
Comparison Of W-CDMA And Cdma2000
White Papers The comparative investigation of these 3G alternatives reveals that system capacities are more or less in the same range, with slight advantage of W-CDMA when using comparable transmission technologies and channel conditions.
[January 1, 1970, 0:59]
Linearity Considerations Of W-CDMA Front-Ends For UMTS
White Papers Formulas are presented relating the various distortion effects of the W-CDMA signals like adjacent channel leakage ratio (ACLR); cross modulation or inter-modulation to well-known linearity measures like input intercept point of third-(IIP3) and...
[January 1, 1970, 0:59]
Teletraffic Engineering Of Multi-Band W-CDMA Systems
White Papers Multi-band Wide-Band Code Division Multiple Access (W-CDMA) systems are considered to be among the best alternatives for Universal Mobile Telecommunications System (UMTS). To evaluate the performance of multi-band W-CDMA systems many parameters...
[January 1, 1970, 0:59]
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...
[January 1, 1970, 0:59]
Distortion Of W-CDMA Signals Over Optical Fibre Links
White Papers This paper presents first measurement results for the transmission of W-CDMA signals over optical fibre. Radio over fibre systems are now being used extensively for enhanced cellular coverage inside buildings such as office blocks, shopping malls...
[January 1, 1970, 0:59]
Multipath Statistics For 3G W-CDMA Systems
White Papers This information can be used in the design of the RAKE receiver of wideband code division multiple access systems (W-CDMA). The bands between 1920-1980 MHz and 2110-2170 MHz have been allocated as the uplink and downlink frequency bands of the FDD...
[January 1, 1970, 0:59]
Throughput Analysis For W-CDMA System With MIMO And AMC
White Papers MERL evaluated the average throughput of two types of W-CDMA systems with Multiple-input-multiple-output and adaptive modulation and coding by numerical simulation and theoretic analysis. One system employs space-time transmit diversity, another...
[January 1, 1970, 0:59]
Radio Access Technologies And Signaling Scheme In W-CDMA System
White Papers W-CDMA is a radio interface for IMT-2000 (International Mobile Telecommunications 2000), which was standardized for use as the 3rd generation wireless mobile telephone system. W-CDMA provides a voice service whose quality is comparable with that of...
[January 1, 1970, 0:59]
Base Transceiver Station For W-CDMA System
White Papers Fujitsu started commercial delivery of a W-CDMA base transceiver station (BTS). Then they dramatically increased the number of traffic channels in this BTS and reduced its power consumption. Fujitsu then began mass production and delivery of the...
[January 1, 1970, 0:59]
Adaptive Array Antenna For W-CDMA Systems
White Papers This paper describes an integrated AAA system for W-CDMA that consists of both uplink and downlink beam formers. The adaptive array antenna (AAA) is one of the advanced techniques that will be implemented in the IMT-2000 mobile telecommunications...
[January 1, 1970, 0:59]
W-CDMA Mobile Terminal
White Papers This paper introduces the FOMA F2611. There are several kinds of mobile terminals are available. Fujitsu also released FOMA F2611. This is the first terminal that supports 384 kb/s packet communication in the uplink and downlink, making it suitable...
[January 1, 1970, 0:59]
