We propose a new coarse frequency offset estimation algorithm in orthogonal frequency-division multiplexing systems, which performs robust operation in the presence of a symbol timing offset within an allowed range. The effect of a symbol timing offset on estimating a coarse frequency offset is analyzed, and the coherence phase bandwidth according to the allowed symbol timing offset is introduced. The proposed algorithm adapts the concept of the coherence phase bandwidth for the purpose of weakening the effect of the symbol timing offset.
Bibliographical noteFunding Information:
Paper approved by A. Ahlen, the Editor for Modulation and Signal Design of the IEEE Communications Society. Manuscript received August 30, 1999; revised July 19, 2000 and January 17, 2001. This work was supported by the Institute of Information Technology Assessment of Korea, Samsung Electronics and the Brain Korea 21 Project. This paper was presented in part at the International Conference on Communications, New Orleans, LA, June 2000.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering