Combined OFDM-CDMA configuration for multimedia wireless applications
| Autor: | Gianluca Reali, Fabrizio Frescura, S. Cacopardi |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Engineering
Interleaving Multimedia Orthogonal frequency-division multiplexing business.industry Code division multiple access Data_CODINGANDINFORMATIONTHEORY computer.software_genre Telecommunications network Frequency-division multiplexing Spread spectrum Media Technology Electronic engineering Bit error rate Wireless Electrical and Electronic Engineering business computer |
| Zdroj: | IEEE Transactions on Consumer Electronics. 42:865-873 |
| ISSN: | 0098-3063 |
| DOI: | 10.1109/30.555761 |
| Popis: | This paper analyses the applicability of OFDM modulation when combined with CDMA for multimedia wireless systems operating in an indoor environment. We demonstrate the motivations and benefits deriving from this combination. Particular emphasis is given to channel equalisation techniques, designed to face different problems arising in the up-link and in the down-link. In particular, an equalisation technique based on channel inversion, combined with carrier interleaving and adaptive suppression of noisy carriers, is proposed in the down-link, while a pre-equalisation approach is used in the up-link. The analysis provides both BER performance and computational cost of the most important procedures that are to be implemented within multimedia terminals. The computational cost analysis is carried out using commercial DSP platforms. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|