Spatial diversity scheme to efficiently cancel ISI and ICI in OFDM-OQAM systems

作者: Nizar Zorba , Faouzi Bader

DOI: 10.1155/2010/576243

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摘要: This paper is based on an Offset Quadrature Amplitude Modulation (OQAM) Orthogonal Frequency Division Multiplexing (OFDM) transmission scheme that operated without a Cyclic Prefix (CP), where the multiple transmitting antennas are employed to substantially reduce inherent intersymbol and intercarrier interference. The proposed avoids use of CDMA technology get rid nonemployment CP increases spectral efficiency in comparison with classical CP-OFDM systems, as it does not employ for its correct performance. On other hand, comes at cost Intersymbol Interference (ISI). presents method which cancels interference terms by employing multiantenna precoding strategy spatial diversity OQAM-OFDM scheme, so overall system can advantage removal while no ISI generated. Moreover, benefits from multiuser gain through opportunistic scheduler transmitter side select user best channel characteristics each instant. resultant OQAM-OFDM-MIMO data rate obtained closed form expression proved be higher than systems.

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