multiple access communication systems
Dynamic Bandwidth Allocation for Multimedia Traffic With Rate Guarantee and Fair Access in WCDMA Systems
White Paper Using multiple codes allows to compensate those users suffering from bad communication quality or even errors. Using a credit management and a compensation mechanism, the algorithms provide rate guarantee and fair access to mobile terminals. [11 Jul 2008]
On the Relation Between Bandwidth and Robustness of UWB Channel in Complex Confined Areas
White Paper Ultra-Wideband (UWB) communication has been the subject of extensive research in recent years due to its unique capabilities and potential applications, particularly in short-range multiple access wireless communications. [08 Jul 2008]
Variable Bit Allocation for FH-CDMA Wireless Communication Systems
White Paper A frequency-hopped code-division multiple-access system can adapt to the different interference levels in hopping patterns and assign the slots different bit rates to increase the system capacity. In the wireless indoor environment, the channel may... [10 Apr 2008]
Effective Throughput: A Unified Benchmark for Pilot-Aided OFDM/SDMA Wireless Communication Systems
White Paper Further, capacity can be greatly enhanced through spatial division multiple access (SDMA), so that several users can transmit packets simultaneously to the BS. This paper studies the uplink performance of an orthogonal frequency division... [10 Apr 2008]
OSE Case Study: Ericsson Radio Systems
White Paper When Ericsson embarked on the task of building a third generation communication system for wireless applications, the company opted to support WCDMA (Wideband Code Division Multiple Access) for the Universal Mobile Telecommunications System (UMTS). [03 Apr 2008]
Design of Networking Protocols for Shallow Water Peer-to-Peer Acoustic Networks
White Paper Communication between a set of underwater systems such as remote sensors, autonomous underwater vehicles and control vessels would enhance the effective use of such systems tremendously. As electromagnetic waves do not propagate well underwater... [08 Jan 2008]
Fast-Growing University Improves Online Messaging, Publication, and Communication
White Paper It also integrated its email and voicemail systems to offer a single point of access to messaging. Staff and students can now access up-to-date information from a personalised Web portal on and off site. [18 Dec 2007]
Wireless Network Technologies
White Paper It discusses Network technologies, multiple access methods, and data communication systems (past, present, and future). This white paper provides an overview of the different network technologies in the wireless industry. [28 Oct 2007]
Capacity of CDMA Systems
White Paper In the past decade, it has been shown that CDMA is the most suitable multiple access transmission technology for Mobile Communications and all the 3rd Generation Mobile Communication Standards suggest CDMA for the Air-Interface. [01 Aug 2007]
On the Exploitation of Multiple Access Points in a Wireless Single-Frequency-Network Using TDD-OFDM-MIMO Techniques
White Paper The Multiple-Input-Multiple-Output (MIMO) technique is the most attractive candidate to improve the spectrum efficiency in the next generation wireless communication systems. This paper advocates using SFN for Multiple Access Points (MAP) MIMO data... [18 Apr 2007]
Channel Capacity of TDD-OFDM-MIMO for Multiple Access Points in a Wireless Single-Frequency-Network
White Paper The Multiple-Input-Multiple-Output (MIMO) technique is the most attractive candidate to improve the spectrum efficiency in the next generation wire-less communication systems. This proposal advocates using SFN for Multiple Access Points (MAP) MIMO... [18 Apr 2007]
Equalization and Multi-User Detection for OFDM-Based CDMA Schemes
White Paper Mobile radio communication systems are affected by the frequency and time selectivity of radio channel due to multipath propagation and Doppler shifts. In an Orthogonal Frequency Division Multiplexing (OFDM) based Code Division Multiple Access... [14 Apr 2007]
Multichannel Random Access in Multicell OFDMA Wireless Networks
White Paper OFDMA systems are considered promising candidates for implementing next generation wireless communication systems. They provide multiple channels that can be accessed via random access schemes. However, traditional random access schemes could... [13 Apr 2007]
The Performance of OFDM-SDMA Systems With Power Amplifier Non-Linearities
White Paper In this paper, the effects of amplifier nonlinearities is evaluated in OFDM with Space-Division-Multiple-Access (SDMA).This paper shows that nonlinear power amplifier reduced dramatically the performance of multiple-antennas OFDM systems. [11 Apr 2007]
SINR Maximizing Space-Time Filtering for Asynchronous DS-CDMA
White Paper Direct Sequence Code Division Multiple Access (DS-CDMA) is a core technology for wireless access that is proposed for future Generation (3G) mobile and personal communication systems. The use of a base-station antenna array is strongly endorsed in... [10 Nov 2006]
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