A New Filter Bank Multicarrier System With Two Prototype Filters for QAM Symbols Transmission and Reception
A filter bank multicarrier quadrature amplitude modulation (FBMC QAM) system with two prototype filters for transmitting QAM symbol is proposed, and the orthogonality conditions for the FBMC QAM system without the intrinsic interference is derived. The proposed transmitter performs the individual filtering for the even and odd numbered sub carrier symbols, respectively. In order to satisfy the derived orthogonality conditions, we perform a sub block wise reverse ordering procedure for the outputs of the odd numbered sub carrier filter. Also, this paper shows that the proposed FBMC QAM system satisfies the suggested orthogonality conditions and can use the multiple input multiple output transmission schemes as the conventional orthogonal frequency division multiplexing (OFDM) systems. The signal to interference power ratio and the bit error rate (BER) for the proposed FBMC QAM system are evaluated. Numerical results show that the proposed FBMC QAM system has almost the same BER performance compared with the FBMC OQAM and OFDM systems.
IEEE Transactions on Wireless Communications