On Achievable Inter-User Orthogonality for Multi-User Communication Systems in Multipath Fading Environments
J. Ruprecht · 2005
This paper proposes and compares three broadband modulation/demodulation schemes for use in a multipath fading environment. They are all based on CDMA, are of a broadband nature in order to combat frequency selective fading and achieve a certain degree of orthogonality in order to enhance spectral efficiency.