Convolutional Code Spread Multicarrier System with Complementary Sequences

A novel convolutional code spread scheme for multi- carrier system with high diversity gain is proposed in this paper. This scheme, named by convolutional code spread multicarrier (CCSM), convolutionally spreads the data symbols onto several consecutive subcarriers with complementary sequences. Compared with the traditional OFDM and OFDM-CDM systems, CCSM enjoys high BER performance with equivalent spectrum efficiency in multipath Rayleigh fading channels. Moreover, the special structure of convolutional spreader in CCSM makes the system suitable for high order modulation, which undoubtedly endows the CCSM with the attractable capability of high transmission capacity.

[1]  Wei Jiang,et al.  Convolutional Multiplexing for Multicarrier Systems , 2007, 2007 IEEE Wireless Communications and Networking Conference.

[2]  Stefan Kaiser,et al.  OFDM code-division multiplexing in fading channels , 2002, IEEE Trans. Commun..

[3]  Marcel J. E. Golay,et al.  Complementary series , 1961, IRE Trans. Inf. Theory.

[4]  Pingzhi Fan,et al.  SEQUENCE DESIGN FOR COMMUNICATIONS APPLICATIONS , 1996 .

[5]  Ramjee Prasad,et al.  Overview of multicarrier CDMA , 1997, IEEE Commun. Mag..

[6]  John G. Proakis Spread Spectrum Signals for Digital Communications , 2003 .

[7]  C.-C. TSENG,et al.  Complementary sets of sequences , 1972, IEEE Trans. Inf. Theory.

[8]  John G. Proakis,et al.  Digital Communications , 1983 .