This paper deals with multiuser detection for multicarrier code-division multiple-access (MC-CDMA) systems, employing either zero-padded or cyclic-prefixed transmission techniques. For both systems, we consider widely-linear finite-impulse response (WL-FIR) estimators, which process both the received signal and its complex conjugate version. With regard to downlink configurations, it is shown that, if the number of users does not exceed a given threshold and their codes are appropriately designed, channel-irrespective WL-FIR zero-forcing symbol recovery is possible. In particular, some spreading code examples are provided, which satisfy our design rules.
Universal code designs for widely-linear multiuser detection in downlink MC-CDMA / Cacciapuoti, ANGELA SARA; Gelli, Giacinto; Verde, Francesco. - (2007), pp. 1-5. (Intervento presentato al convegno 8th IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC-2007) tenutosi a Helsinki (Finlandia) nel Giugno 2007) [10.1109/SPAWC.2007.4401284].
Universal code designs for widely-linear multiuser detection in downlink MC-CDMA
CACCIAPUOTI, ANGELA SARA;GELLI, GIACINTO;VERDE, FRANCESCO
2007
Abstract
This paper deals with multiuser detection for multicarrier code-division multiple-access (MC-CDMA) systems, employing either zero-padded or cyclic-prefixed transmission techniques. For both systems, we consider widely-linear finite-impulse response (WL-FIR) estimators, which process both the received signal and its complex conjugate version. With regard to downlink configurations, it is shown that, if the number of users does not exceed a given threshold and their codes are appropriately designed, channel-irrespective WL-FIR zero-forcing symbol recovery is possible. In particular, some spreading code examples are provided, which satisfy our design rules.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
