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Interference cancellation (IC) is an effective and easy implemented technology in the multi-user system. Previous studies demonstrate the principles of IC and IC process which show a great improvement in the system capacity with IC. However, no research has focused on the IC system's capacity domain by giving an accurate formula. This article carries on the theoretical analysis of CDMA reverse link...
Interference cancellation (IC) techniques yielding significant capacity gains are presented in this paper for CDMA2000 lx base station receiver. In addition to performance gain from conventional IC, hybrid ARQ gain is achieved effectively without interlaced transmission or feedback on the forward link (FL). A new definition of CDMA capacity, based on equivalent load, is introduced to allow a fair...
CDMA2000, WCDMA and WiMAX are three widely used 3G technologies. Since they share the same goal, which is to provide broader coverage and higher throughput in 3G networks, an impartial comparison of their performance is indispensable. However, they are based on different design principles and methodologies, which make the comparison challenging. This paper presents a comparative study of these technologies,...
System-level simulation has been widely used to evaluate system performance. Simulation methodologies have also been comprehensively discussed in different organizations or institutions. Most of the simulation methodologies proposed, however, mainly focus on one area of specific technologies. How to evaluate the performance of multiple air interface systems (e.g., cdma2000, WCDMA, WiMAX, and their...
Mobile WiMAX based on IEEE 802.16e standard can realize enhanced network capacity requirements and various services as well as provide more novel experiences for users. Since WiMAX joining in 3G camp as the new member, the coexisting research of WiMAX and other 3G system (WCDMA, cdma2000 1x and TD-SCDMA) deployed in the same service area has gained increasing importance. In this paper, the detailed...
In this paper, we investigate the potential benefit of successive interference cancellation (SIC) in high speed uplink packet access (HSUPA). We explore the possibility of improving the performance of HSUPA by introducing the SIC and we also bring forward a novel scheduling method named effective power-based load control (EPBLC) to extend its advantage. Finally we give the conclusion that with SIC...
WiMAX (802.16e) has been recognized as an official member of IMT-2000 by WRC-07, which permits its use of 3G systems bandwidth, including 2500 to 2690 MHz. The work of coexistence interference analysis between WiMAX and WCDMA systems in 2.5 GHz band is a potential research field. This paper presents several interference paths, investigates the methods of evaluating two coexisting systems in details,...
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