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EnglishThis paper is aimed at presenting a comparison between Direct-Sequence CDMA (DS/CDMA), employing only one carrier, and Multi-Carrier DS/CDMA (MC-DS/CDMA), for information transmission over a Multiple-Input Multiple- Output (MIMO) frequency selective channel with a global bandwidth constraint. Assuming a linear structure at the receiver end, results indicate that MC-DS/CDMA is superior as Channel State Information (CSI) is available. Conversely, for No Channel State Information (NCSI), DS/CDMA exhibits better performance in heavily loaded networks, while MC-CDMA is preferable for low users’ number: since this effect is tied to a more restrictive identifiability condition for the MC-DS/CDMA, its global superiority may be eventually restored by increasing the number of receive antennae. It is also shown that a third modulation format, referred to as hybrid MC-DS/CDMA, seems capable of compromising between the former two.
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| Titolo: | Linear receivers on MIMO channels: a comparison between DS/CDMA and MC-DS/CDMA | |
| Autori: | ||
| Data di pubblicazione: | 2004 | |
| Abstract: | This paper is aimed at presenting a comparison between Direct-Sequence CDMA (DS/CDMA), employing only one carrier, and Multi-Carrier DS/CDMA (MC-DS/CDMA), for information transmission over a Multiple-Input Multiple- Output (MIMO) frequency selective channel with a global bandwidth constraint. Assuming a linear structure at the receiver end, results indicate that MC-DS/CDMA is superior as Channel State Information (CSI) is available. Conversely, for No Channel State Information (NCSI), DS/CDMA exhibits better performance in heavily loaded networks, while MC-CDMA is preferable for low users’ number: since this effect is tied to a more restrictive identifiability condition for the MC-DS/CDMA, its global superiority may be eventually restored by increasing the number of receive antennae. It is also shown that a third modulation format, referred to as hybrid MC-DS/CDMA, seems capable of compromising between the former two. | |
| Handle: | http://hdl.handle.net/11580/5081 | |
| ISBN: | 4902087081 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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