Performance of MC-CDM Systems With MMSEC Over Rayleigh Fading Channels
| Autor: | Namshik Kim, Hyuncheol Park, Yusung Lee |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Mean squared error
Computer Networks and Communications Orthogonal frequency-division multiplexing Aerospace Engineering Frequency-division multiplexing Signal-to-noise ratio Automotive Engineering Electronic engineering Bit error rate Fading Electrical and Electronic Engineering Algorithm Computer Science::Information Theory Rayleigh fading Mathematics Diversity scheme |
| Zdroj: | IEEE Transactions on Vehicular Technology. 59:3126-3130 |
| ISSN: | 1939-9359 0018-9545 |
| DOI: | 10.1109/tvt.2010.2046506 |
| Popis: | In this paper, we investigate the performance of multicarrier code-division multiplexing (MC-CDM) systems with minimum mean square error combining (MMSEC) over a Rayleigh fading channel. An approximated expression on the symbol error rate (SER) for MMSEC is derived. The approximated expression provides an accurate approximation of the true SER, particularly for systems with higher modulation and a small spreading factor. Through the derived error performances, we also calculate the achievable diversity order. MC-CDM systems with MMSEC achieve the same asymptotical diversity order of 1, regardless of the spreading factor. Within practical signal-to-noise ratio (SNR) ranges, the effective diversity order is further increased as a larger spreading factor is used. The derived analytical expressions are verified by numerical and simulation results. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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