TY - GEN
T1 - Spectral-efficiency of time-frequency-domain spread multicarrier DS-CDMA in frequency-selective Nakagami-m fading channels
AU - Pan, Peng
AU - Yang, Lie Liang
AU - Zhang, Youguang
PY - 2008
Y1 - 2008
N2 - In this contribution we study the spectral-efficiency performance of a multicarrier direct-sequence code-division multiple-access system using both time (T)-domain and frequency (F)-domain spreading, which is referred to as TF/MC DS-CDMA for convenience, when communicating over Nakagami-m fading channels. We consider the TF/MC DS-CDMA scheme, since it is a generalized multiple-access scheme that can be readily configured to some other CDMA schemes, so that we can conveniently compare their spectral-efficiency performance. Furthermore, the Nakagami-m fading channel model makes it possible to study the impact of channel quality on the achievable spectral-efficiency. In this contribution, the spectral-efficiency of the TF/MC DS-CDMA is investigated, when various single-user and multiuser detection schemes are invoked, which include optimum detection, minimum mean-square error (MMSE) detection, zero-forcing (ZF) detection and the matched-filter (MF) based detection. One of our conclusions is that channel quality has insignificant impact on the achievable spectral-efficiency of the TF/MC DS-CDMA, when the number of T-domain resolvable paths of the frequency-selective fading channels is sufficiently high.
AB - In this contribution we study the spectral-efficiency performance of a multicarrier direct-sequence code-division multiple-access system using both time (T)-domain and frequency (F)-domain spreading, which is referred to as TF/MC DS-CDMA for convenience, when communicating over Nakagami-m fading channels. We consider the TF/MC DS-CDMA scheme, since it is a generalized multiple-access scheme that can be readily configured to some other CDMA schemes, so that we can conveniently compare their spectral-efficiency performance. Furthermore, the Nakagami-m fading channel model makes it possible to study the impact of channel quality on the achievable spectral-efficiency. In this contribution, the spectral-efficiency of the TF/MC DS-CDMA is investigated, when various single-user and multiuser detection schemes are invoked, which include optimum detection, minimum mean-square error (MMSE) detection, zero-forcing (ZF) detection and the matched-filter (MF) based detection. One of our conclusions is that channel quality has insignificant impact on the achievable spectral-efficiency of the TF/MC DS-CDMA, when the number of T-domain resolvable paths of the frequency-selective fading channels is sufficiently high.
UR - https://www.scopus.com/pages/publications/58149108842
U2 - 10.1109/VETECF.2008.339
DO - 10.1109/VETECF.2008.339
M3 - 会议稿件
AN - SCOPUS:58149108842
SN - 9781424417223
T3 - IEEE Vehicular Technology Conference
BT - The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall
T2 - 68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference
Y2 - 21 September 2008 through 24 September 2008
ER -