Abstract
For the development of future wireless communication systems, an extremely spectrum-efficient transmission technology is required. Orthogonal frequency division multiplexing (OFDM) and multi-carrier code division multiple access (MC-CDMA) have been attracting much attention. The use of multiple-input multiple-output (MIMO) transmission is essential to achieve a very high speed data transmission with the limited bandwidth. In our previous paper, assuming perfect cancellation of inter-code interference (ICI), we have derived a channel capacity expression for MC-CDMA MIMO in a multi-cell environment and confirmed by numerical evaluation that MC-CDMA MIMO provides a slightly higher capacity than OFDM MIMO. In this paper, we theoretically show by using Jensen's inequality that the channel capacity of MC-CDMA MIMO assuming perfect ICI cancellation (ICIC) is always higher than or equal to that of OFDM MIMO. Furthermore, we compare the channel capacities of MIMO multiplexing and multiple single-input multiple output (SIMO) system.
| Original language | English |
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| Pages | 1384-1388 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2008 |
| Event | 2008 11th IEEE Singapore International Conference on Communication Systems, ICCS 2008 - Guangzhou, China Duration: 2008 Nov 19 → 2008 Nov 21 |
Conference
| Conference | 2008 11th IEEE Singapore International Conference on Communication Systems, ICCS 2008 |
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| Country/Territory | China |
| City | Guangzhou |
| Period | 08/11/19 → 08/11/21 |
Keywords
- Channel capacity
- Component
- Jensen's inequality
- MC-CDMA
- MIMO
- OFDM
- Theoretical study