@inproceedings{ author = {A. Dekorsy}, year = {1998}, month = {Jun}, title = {M-ary Orthogonal Modulation for Multi-Carrier Spread-Spectrum Uplink Transmission}, pages = {1004-1008}, URL = {http://ieeexplore.ieee.org/xpl/RecentCon.jsp?punumber=5593}, address={Atlanta, USA}, abstract={In this paper, we investigate the application of Mary orthogonal modulation for multicarrier spread spectrum (MCSS) uplink transmission over a Rayleigh fading indoor channel. Different coherent detection strategies with perfectly known channel coefficients are analyzed. Furthermore, we present a decisiondirected estimation receiver to apply channel phase estimation. With decisiondirected estimation no redundancy like training data is required to be transmitted. Simulation results show no performance loss for low E b =N 0 and only a moderate degradation for high E b =N 0 in comparison to ideal phase equalization. Moreover, the results are always contrasted with BPSK performance. Applying Mary orthogonal modulation reveals to outperfom BPSK with respect to bit error rate and spectral efficiency, even if ideal equalization is considered for BPSK and decisiondirected estimation for Mary orthogonal modulation. The results are generally valid, whereas in this paper, they are based on the European HIPERLAN/2standardization. }, booktitle={IEEE International Conference on Communications (ICC 98)} }