Seiichi Sampei Akihiko Okada, Shinsuke Ibi, Seiichi Sampei, Spectrum Shaping Technique Combined with SC/MMSE Turbo Equalizer for High Spectral Efficient Broadband Wireless Access Systems Haruka Obata, Shinsuke Ibi, Seiichi Sampei, A Design for an EXIT Chart-Aided Adaptive Transmission Control Technique for Single-Carrier Based Multi-User MIMO Systems