Abstract
As bandwidth is becoming precious, spectral efficiency is nowadays one of the key parameters of mobile radio communications. To reach high spectral efficiency in Code Division Multiple Access systems, combating multi-user interference is inevitable. Especially in an uplink scenario this can be done by applying multi-user detection. This paper compares two multiplexing schemes for pilot data in a system with combined maximum likelihood channel estimation (MLCE) and successive interference cancellation (SIC).
It is shown that even though preceding pilots deliver a better initial channel estimate a scheme with IQ-mappen pilots leads to better performance when using a combined MLCE-SIC receiver
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Feuersänger, M., Hasenknopf, F., Kühn, V., Kammeyer, KD. (2004). Comparison of Pilot Multiplexing Schemes for ML Channel Estimation in Coded OFDM-CDMA. In: Fazel, K., Kaiser, S. (eds) Multi-Carrier Spread-Spectrum. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0502-8_23
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DOI: https://doi.org/10.1007/978-94-017-0502-8_23
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-6524-7
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