An eight-user UMTS channel unit Processor for 3GPP base station applications
T. Prokop, C. Thomas, M.A. Bickerstaff, J. Niemasz, P. Bernadac, P. Saintot, Rafael P. Laufer, D. Bescher, R. Parra Michel, B. Walker, F. Derriennic, N. Burban, Estevão Pape, Joris Moreau, Insuk Cha, Stefano L. Angioni, K. Mhirsi, J. Lee, P. Prat, G. Rogard · IEEE Journal of Solid-State Circuits · 2004
We present a multi-user W-CDMA baseband channel unit processor for cellular base station applications. The ASIC is compliant with the 3GPP/UMTS standard and exceeds 3GPP minimum requirements for high-speed data by 2.2-6.2 dB. It supports up to eight users simultaneously, with a mix of voice and data services and a maximum uplink data rate of 384 kb/s and maximum downlink data rate of 2 Mb/s. The ASIC implements preamble detection, searching, demodulation RAKE-finger processing, channel coding/decoding for voice and data services, and transmission functions. It is coupled to a DSP to form a complete channel element for eight users.