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A Multi-Band OFDM Ultra-Wideband SoC in 90 nm CMOS Technology
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- Authors
- Do-Hoon Kim, Kyu-Min Kang, Chungyong Lee
- Issue Date
- 2011-08
- Citation
- IEEE Transactions on Consumer Electronics, v.57, no.3, pp.1064-1070
- ISSN
- 0098-3063
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- 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.
- KSP Keywords
- 90 nm CMOS technology, Automatic Gain Control(AGC), Average power consumption, CFO estimation, Carrier Frequency Offset, Fast Fourier Transform(FFI), Hardware efficient, High speed data, MB-OFDM, Multiband OFDM, Orthogonal Frequency-Division Multiplexing(OFDM)