Efficient structure-based carrier frequency offset estimation for interleaved OFDMA uplink

Zhongren Cao, Ufuk Tureli, Yu Dong Yao

Research output: Contribution to journalConference articlepeer-review

29 Scopus citations

Abstract

In orthogonal frequency division multiple access (OFDMA), closely spaced multiple subcarriers are assigned to different users for parallel data transmissions. The subcarriers are overlapping but orthogonal to each other such that there is no inter-carrier interference. Carrier frequency offsets between the transmitters and the uplink receiver will cause the loss of the orthogonality among subcarriers, hence introduce inter-carrier interference resulting in multiple access interference. This paper proposes a carrier frequency offset estimation algorithm for the uplink of interleaved OFDMA systems. This algorithm requires only one OFDMA block and utilizes the inner structure of the signals without any aid from training symbols or the knowledge of channels. Simulation results illustrate the high accuracy and efficiency of the proposed estimation algorithm.

Original languageEnglish
Pages (from-to)3361-3365
Number of pages5
JournalConference Record - International Conference on Communications
Volume5
StatePublished - 2003
Event2003 International Conference on Communications (ICC 2003) - Anchorage, AK, United States
Duration: 11 May 200315 May 2003

Fingerprint

Dive into the research topics of 'Efficient structure-based carrier frequency offset estimation for interleaved OFDMA uplink'. Together they form a unique fingerprint.

Cite this