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A W-CDMA Baseband Modem LSI with Multi-Engine Architecture
May SUZUKI Manabu KAWABE Takashi YANO Junko KIYOTA Hirotake ISHII Tsuyoshi TAMAKI Nobukazu DOI
IEICE TRANSACTIONS on Electronics
Publication Date: 2002/02/01
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on High-Performance and Low-Power Microprocessors)
Category: Product Designs
baseband modem, W-CDMA, engine, distributed processing,
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In this paper, a new multi-engine architecture for the baseband modem LSI of W-CDMA systems is proposed. The developed test chip with this architecture is also presented. In the multi-engine architecture, processors and wired logic are combined to obtain both flexibility and low power dissipation. Multiple processors are used in the LSI to lower its operating frequency by distributed processing. A customized processor is used to lower the overhead of multiple processors in terms of LSI scale. The test chip was fabricated with a 0.25-µm process. Its measured power dissipation for simultaneous 384 kbit/s downlink reception and 64 kbit/s uplink transmission was 160 mW.