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초록
영어
Recent advances in wireless communications have made use of MC-CDMA and OFDM techniques to allow for high data rate transmission. Rapid time variations of the wireless communication channel have a effect on the performance of multicarrier modulation. In this paper, we emphasis the Doppler spread and Computes its effect on the bit error rate (BER) for multicarrier code division multiple access (MC-CDMA) and orthogonal frequency division multiplexing (OFDM). Also, we evaluate the channel capacity to quantify the potential of MC-CDMA and OFDM. We evaluate the effect of Doppler spread with Doppler shift at various carrier frequencies. We also evaluate the capacity of LTI, OFDM, MC-CDMA and RAYLEIGH channels.
목차
Abstract
1. Introduction
2. Multi-Carrier CDMA
3. OFDM Model
4. Parameters of MC-CDMA and OFDM
4.1 Delay spread
4.2 Doppler Spread
4.3 Effect on BER for OFDM
4.4 Effect of BER for MC-CDMA
4.5 Channel capacity
5. SIMULATION RESULTS
6. Conclusion
References
1. Introduction
2. Multi-Carrier CDMA
3. OFDM Model
4. Parameters of MC-CDMA and OFDM
4.1 Delay spread
4.2 Doppler Spread
4.3 Effect on BER for OFDM
4.4 Effect of BER for MC-CDMA
4.5 Channel capacity
5. SIMULATION RESULTS
6. Conclusion
References
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