A Frequency Offset Estimation and Compensation Scheme for MB-OFDM UWB Modem

作者：Kim Do Hoon^*; Kang Kyu Min; Lee Chungyong

来源：IEICE - Transactions on Communications, 2012, E95B(3): 1015-1018.

DOI：10.1587/transcom.E95.B.1015

• carrier frequency offset (CFO)
• sampling frequency offset (SFO)
• MB-OFDM
• UWB
• rotor

We present a carrier and sampling frequency offset estimation and compensation scheme for a multi-band orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) modem. We first perform initial carrier frequency offset (CFO) estimation and compensation during the preamble period, and then conduct the estimation and compensation of the residual CFO and sampling frequency offset (SFO) during the payload period. The proposed design scheme reduces the logic gate count of the frequency offset compensation block by about 10%, while it gives almost the same performance at the packet error rate (PER) of 10(-4) in the CM I channel. The frequency offset estimation and compensation block is implemented using 90 nm CMOS technology and tested.

• 出版日期2012-3