Spectrally overlaid narrow-band and wide-band CDMA systems
Il Gyu Kim, Dongwoo Kim, Dong Geun Jeong · IEEE Communications Letters · 1997
A spectral overlay of a narrow-band code-division multiple access (CDMA) system and a wide-band CDMA system is proposed. The achievable joint capacity of the overlaid system is examined and the capacity tradeoffs between the two CDMA systems are given in a closed form.