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Conference Paper
The Implementation of 256 QAM CDMA Modulator
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- Issue Date
- 2003-07
- Citation
- International Conference on High Speed Networks and Multimedia Communications (HSNMC) 2003, pp.326-332
- Language
- English
- Type
- Conference Paper
- Abstract
- We implemented 256 Quadrature Amplitude Modulation (QAM) Code Division Multiple Access (CDMA) modulator with Field Programmable Gate Array (FPGA). In this paper, we describe the implemented modulator specifications and structures. With Modem Analysis Tool (MAT), we confirm that the implemented modulator functions without error. From fixed-point simulation, we show that this modulator bit error rate performances are almost equal to the theoretical QAM bit error rate and know how fading influence modulator performance. We recommend that the implemented 256 QAM CDMA modulation methods can be employed in high-speed mobile environment, if only the exact fading compensation is possible. © Springer-Verlag Berlin Heidelberg 2003.
- KSP Keywords
- 256-QAM, Bit Error Rate(And BER), Code division Multiple Access(CDMA), Field Programmable Gate Arrays(FPGA), Fixed-point, High-speed mobile, Modulation method, Quadrature-amplitude modulation(QAM), analysis tool, mobile environment, rate performance