We investigate the impact of the time offset (TO) and carrier frequency offset (CFO) on the performance of a filter bank multicarrier- quadrature amplitude modulation (FBMCQAM) system. As opposed to conventional FBMC system where offset QAM (OQAM) is utilized due to the intrinsic interference, the FBMC-QAM system cancels the intrinsic interference based on the orthogonality conditions between the two kinds of filters. Because the FBMC-QAM system uses two kinds of filters, the effects on the TO and CFO are different compared to the conventional FBMC system. The performance of this system is degraded by TO because the two-filter orthogonality conditions are not satisfied, resulting in severe inter-symbol interference (ISI). With respect to the CFO, the orthogonality between the two filters protects from performance degradation caused by intercarrier interference (ICI). Numerical results show that FBMCQAM is more robust against CFO while it is more sensitive to TO compared to the FBMC-OQAM system.
|Title of host publication||Proceedings - 2014 IEEE Military Communications Conference|
|Subtitle of host publication||Affordable Mission Success: Meeting the Challenge, MILCOM 2014|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||7|
|Publication status||Published - 2014 Nov 13|
|Event||33rd Annual IEEE Military Communications Conference, MILCOM 2014 - Baltimore, United States|
Duration: 2014 Oct 6 → 2014 Oct 8
|Name||Proceedings - IEEE Military Communications Conference MILCOM|
|Other||33rd Annual IEEE Military Communications Conference, MILCOM 2014|
|Period||14/10/6 → 14/10/8|
Bibliographical notePublisher Copyright:
© 2014 IEEE.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering