Referenced Items are not available for this document.
A very promising technical approach for future wireless communication systems is to combine MIMO OFDM and Direct (up/down) Conversion Architecture (DCA). However, while OFDM is sensitive to Carrier Frequency Offset (CFO), DCA is sensitive to I/Q-imbalance. Such RF impairments can seriously degrade the system performance. For the compensation of these impairments, a preamble-based scheme is proposed in this paper for the joint estimation of CFO, transmitter (Tx) and receiver (Rx) frequency-selective I/Q-imbalance and the MIMO channel. This preamble is constructed both in time- and frequency domain and requires much less overhead than the existing designs. Moreover, Closed-Form Estimators (CLFE) are allowed, enabling efficient implementation. The advantages and effectiveness of the proposed scheme have been verified by numerical simulations.
Published in:
Vehicular Technology Conference (VTC Fall), 2011 IEEE
Date of Conference: 5-8 Sept. 2011
- Page(s):
- 1 - 5
- ISSN :
- 1090-3038
- Print ISBN:
- 978-1-4244-8328-0
- INSPEC Accession Number:
- 12407280
- Conference Location :
- San Francisco, CA
- Digital Object Identifier :
- 10.1109/VETECF.2011.6093143
- Product Type:
- Conference Publications
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