Hybrid Mapping Scheme for Recent Orthogonal FDMA Schemes

F. S. Al-kamali

Department of Electrical, Faculty of Engineering and Architecture, Ibb University, Ibb, Yemen.

DOI: 10.4236/ijcns.2013.63018                

Abstract

Single-carrier frequency-division multiple access (SC-FDMA) and orthogonal frequency division multiple access (OFDMA) systems are new orthogonal multiple access systems. They have been adopted in the 3GPP long term evolution (3GPP-LTE). In these systems, there are only two types of subcarrier mapping schemes which are the interleaved and the localized. So, introducing a new subcarrier mapping scheme is an important issue, which is the main objective of this paper. In this paper, a hybrid subcarrier mapping scheme is proposed and examined for the SC-FDMA system. Monte Carlo simulations are performed to compare the performance of the proposed scheme with that of the interleaved and the localized schemes. It is shown that a hybrid scheme provides better performance than that of the localized and the same performance as that of the interleaved scheme and increased robustness to carrier frequency offset (CFO) at the expense of increased envelope fluctuations.

Keywords

Subcarrier Mapping; Hybrid Scheme; SC-FDMA

Conflicts of Interest

The authors declare no conflicts of interest.

References

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