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학술지 A Multi-Band OFDM Ultra-Wideband SoC in 90 nm CMOS Technology
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저자
김도훈, 강규민, 이충용
발행일
201108
출처
IEEE Transactions on Consumer Electronics, v.57 no.3, pp.1064-1070
ISSN
0098-3063
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TCE.2011.6018856
협약과제
11PR3300, 10GHz 이하 대역에서 Dynamic Spectrum Access를 위한 상호 공존성(Coexistence) 기준 연구, 정병장
초록
We present a multi-band orthogonal frequency division multiplexing (MB-OFDM) ultrawideband (UWB) system on chip (SoC) for high speed wireless communications. The UWB SoC has a power management scheme to minimize the average power consumption and adopts hardware-efficient parallel processing architecture to reduce the logic gate count of the modem. Specifically, symbol synchronization block is implemented with the signed algorithm; automatic gain control (AGC), carrier frequency offset (CFO) estimation, and preamble delimitation check block share the eight complex multipliers during preamble transmission; and AGC, fast Fourier transform (FFT), symbol synchronization, CFO estimation, and preamble delimitation check blocks share the buffer which contains received symbols. This SoC adopts a 32-bit reduced instruction set computer (RISC) processor for high speed data transaction and supports universal serial bus (USB) 2.0 and secure digital input/output (SDIO) for host interface. The designed SoC is implemented with 90 nm CMOS technology with a core voltage of 1.2 V. The implemented chip size is about 5 mm x 5 mm1. © 2006 IEEE.
키워드
multi-bandorthogonal frequency division multiplexing (MB-OFDM), power management, synchronization, systemon chip (SoC), Ultra-wideband (UWB)
KSP 제안 키워드
90 nm CMOS technology, Automatic Gain Control(AGC), Average power consumption, CFO estimation, Carrier Frequency Offset, Fast fourier transform (fft), Hardware efficient, High Speed Wireless Communications, High speed data, Logic gate, MB-OFDM