Uplink user capacity in a CDMA system with hotspot microcells: effects of finite transmit power and dispersion
| العنوان: | Uplink user capacity in a CDMA system with hotspot microcells: effects of finite transmit power and dispersion |
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| المؤلفون: | Stuart C. Schwartz, H. Vincent Poor, Larry J. Greenstein, Shalinee Kishore |
| المصدر: | IEEE Transactions on Wireless Communications. 5:417-426 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2006. |
| سنة النشر: | 2006 |
| مصطلحات موضوعية: | FOS: Computer and information sciences, Computer science, business.industry, Code division multiple access, Information Theory (cs.IT), Computer Science - Information Theory, Applied Mathematics, Data_CODINGANDINFORMATIONTHEORY, Transmitter power output, Computer Science Applications, Telecommunications link, Computer Science::Networking and Internet Architecture, Electronic engineering, Wireless, Microcell, Fading, Rake receiver, Macrocell, Electrical and Electronic Engineering, business, Computer Science::Information Theory, Communication channel |
| الوصف: | This paper examines the uplink user capacity in a two-tier code division multiple access (CDMA) system with hotspot microcells when user terminal power is limited and the wireless channel is finitely-dispersive. A finitely-dispersive channel causes variable fading of the signal power at the output of the RAKE receiver. First, a two-cell system composed of one macrocell and one embedded microcell is studied and analytical methods are developed to estimate the user capacity as a function of a dimensionless parameter that depends on the transmit power constraint and cell radius. Next, novel analytical methods are developed to study the effect of variable fading, both with and without transmit power constraints. Finally, the analytical methods are extended to estimate uplink user capacity for multicell CDMA systems, composed of multiple macrocells and multiple embedded microcells. In all cases, the analysis-based estimates are compared with and confirmed by simulation results. To appear in IEEE Transactions on Wireless Communications |
| تدمد: | 1536-1276 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ecf4c50353559c997560a9a76a31122 https://doi.org/10.1109/twc.2006.1611065 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....7ecf4c50353559c997560a9a76a31122 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15361276 |
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