Abstract
Recently, multi-carrier code division multiple access (MC-CDMA) has been attracting much attention as a broadband wireless access technique for the next generation mobile communications systems. Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can take advantage of the channel frequency-selectivity and improve the average bit error rate (BER) performance due to frequency-diversity gain. However, conventional MC-CDMA requires the insertion of guard interval (GI) and this reduces the transmission efficiency. Overlap FDE technique has been proposed that requires no GI insertion. Recently, we showed that MC-CDMA using overlap FDE can provide almost the same BER performance as the conventional MC-CDMA downlink using the GI insertion. However, our previous work assumed the ideal channel estimation. In this paper, we propose a pilot assisted channel estimation technique suitable for MC-CDMA downlink using overlap FDE and evaluate the BER performance by computer simulation.
| Original language | English |
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| Pages | 1106-1110 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2008 |
| Externally published | Yes |
| Event | 2008 11th IEEE Singapore International Conference on Communication Systems, ICCS 2008 - Guangzhou, China Duration: 2008 Nov 19 → 2008 Nov 21 |
Other
| Other | 2008 11th IEEE Singapore International Conference on Communication Systems, ICCS 2008 |
|---|---|
| Country/Territory | China |
| City | Guangzhou |
| Period | 08/11/19 → 08/11/21 |
Keywords
- Channel estimation
- Component
- Frequency-selective fading channel
- MC-CDMA
- Overlap FDE
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering
- Communication