multiple access cdma
Convergence Analysis of Iteratively Detected Time Hopping and DS-CDMA Ultrawide Bandwidth Systems by EXIT Charts
White Paper This paper presents a novel analysis on the decoding convergence of Time Hopping (TH) and Direct Sequence (DS) Code-Division Multiple-Access (CDMA) Ultrawide Bandwidth (UWB) systems when communicating over multipath Nakagami channels. [11 Jul 2008]
Dynamic Load Balancing Through Coordinated Scheduling in Packet Data Systems
White Paper Third generation Code-Division Multiple Access (CDMA) systems propose to provide packet data service through a high speed shared channel with intelligent and fast scheduling at the base-stations. In the current approach base-stations schedule... [10 Jul 2008]
Unicel Unites Its Wireless Networks and Next-Generation Services on HP Solution
White Paper As the central repository for transient and static subscriber information, the HP OpenCall Home Location Register helps Unicel deliver mobile services over Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) data... [09 Jul 2008]
A Study in Mobile Messaging
White Paper Existing Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA) mobile networks use Short Message Service (SMS) as a multipurpose data service that enables rapid deployment of data applications without the need for... [02 Jul 2008]
Seamless Roaming: Advantages to Mobile Operators and Their Subscribers
White Paper Seamless roaming enables a mobile operator's data subscribers to remain continuously connected as they cross network boundaries and use different radio access networks, including Wi-Fi, General Packet Radio Service (GPRS), Code Division Multiple... [11 Apr 2008]
System Performance Comparison of Optical CDMA and WDMA in a Broadcast Local Area Network
White Paper The performance of optical code-division multiple-access (CDMA) systems with wavelength-hopping/time-spreading codes is compared to that of a wavelength-division multiple-access (WDMA) system. When more than seven wavelengths are available, optical... [10 Apr 2008]
Resource Pooling and Effective Bandwidths in CDMA Networks With Multiuser Receivers and Spatial Diversity
White Paper Much of the performance analysis on multiuser receivers for direct-sequence code division multiple-access (CDMA) systems is focused on worst case near-far scenarios. This paper shows that under some conditions, the user capacity of an uplink power... [10 Apr 2008]
Optimizing Spectral Efficiency in Multiwavelength Optical CDMA System
White Paper Prime codes are excellent candidates for use in multiwavelength optical code-division multiple-access (O-CDMA) systems. This paper shows that in an O-CDMA system using two-dimensional single-pulse-per-row codes, a single choice of the number of... [10 Apr 2008]
Successive Interference Cancellation Algorithms for Downlink W-CDMA Communications
White Paper In this paper, successive intracell interference cancellation (IIC) of the wideband-code division multiple access (W-CDMA) signal at the mobile unit is considered. Three new interference cancellation techniques suitable for the downlink of any CDMA... [10 Apr 2008]
Forward-Link Capacity of a DS/CDMA System With Mixed Multirate Sources
White Paper Some studies have been done on capacity of a code division multiple access (CDMA) system with mixed multirate sources. This trend comes from the fact that the capacity of a CDMA system is reverse-link limited. [10 Apr 2008]
Performance of MT-CDMA System With Post-Detection Diversity Reception Over Rician Fading Channel
White Paper This paper presents the theoretical analysis for Non-coherent multi-tone code division multiple access (MT-CDMA) system in terms of average bit error rate (BER). The system uses differential binary phase shift keying (DBPSK) modulation and post... [10 Apr 2008]
Linear Parallel Interference Cancellation in Long-Code CDMA Multiuser Detection
White Paper Parallel interference cancellation (PIC) is a promising detection technique for code division multiple access (CDMA) systems. It has previously been shown that the weighted multi-stage PIC can be seen as an implementation of the steepest descent... [10 Apr 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]
Soft Handoff and Uplink Capacity in a Two-Tier CDMA System
White Paper In systems using Code-Division Multiple Access (CDMA), user capacity is enhanced by using soft handoff. This paper examines the effect of soft handoff on the uplink user capacity of a CDMA system consisting of a single macrocell in which a single... [24 Mar 2008]
Capacity and QoS for Streaming Video Applications Over TCP in CDMA Based Networks
White Paper This paper studies the capacity, i.e.the number of customers per cell, and the quality of service for streaming video in the uplink direction of a cellular Code Division Multiple Access (CDMA){based wireless system. [19 Dec 2007]
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