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A synchronization and cell searching technique using pilot tones for OFDM cellular systems
- Issue Date
- Jan-2006
- Publisher
- IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
- Keywords
- OFDM; synchronization; cell searching; pilot; downlink detection
- Citation
- IEICE TRANSACTIONS ON COMMUNICATIONS, v.E89B, no.1, pp 235 - 238
- Pages
- 4
- Journal Title
- IEICE TRANSACTIONS ON COMMUNICATIONS
- Volume
- E89B
- Number
- 1
- Start Page
- 235
- End Page
- 238
- ISSN
- 0916-8516
1745-1345
- Abstract
- In this letter, a pilot structure and an efficient algorithm for downlink synchronization and cell searching in OFDM-based cellular systems are proposed. The pilots, randomly allocated in the frequency domain, allow us to minimize inter-cell interference (ICI) as well as to increase cell searching capability, estimation range of integer carrier frequency offset (CFO), and estimation accuracy of symbol timing offset (STO). The proposed low-complexity joint algorithm for integer CFO estimation, cell searching, and downlink detection is robust to ICI, multipath channel, STO and fine CFO.
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