Título:
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Asymptotically optimum energy profile for successive interference cancellation in DS-CDMA under a power unbalance constraint
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Autor/a:
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Sala Álvarez, José; Rey Micolau, Francesc; Villares Piera, Nemesio Javier
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions |
Abstract:
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A new Ordinary Differential Equation (ODE) governing the SNIR evolution of a Successive Interference Canceller (SIC) for DS-CDMA is derived when the number of users tends to infinity and all users share the same channel encoder. Using Variational Calculus, this ODE is applied to obtaining the energy profile that maximizes the average spectral efficiency when a constraint on the power unbalance (maximum power to minimum power ratio) of received users is enforced. The conditions for extremality of the optimum energy profile are established in terms of the common encoder's Packet Error Rate (PER) function. |
Abstract:
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Peer Reviewed |
Materia(s):
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-Àrees temàtiques de la UPC::Matemàtiques i estadística::Equacions diferencials i integrals -Differential equations -Sound --Recording and reproducing --Digital techniques. -successive interference cancellation
power unbalance
differential equation
variational calculus
packet error rate
CDMA
error propagation -Equacions diferencials parcials -So -- Enregistrament i reproducció |
Derechos:
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Tipo de documento:
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Artículo - Versión publicada Artículo |
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