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A frequency offset compensation method for ultra narrowband digital wireless modems
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- Issue Date
- 2004-09
- Citation
- International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) 2004, pp.1370-1374
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- We evaluate the performance of the digital modulation schemes described in the APCO Project 25 FDMA specifications which can be used for applying the ultra-narrowband technology to the simple two-way radio systems, and discuss difficulties in the DSP implementation of the systems. We analyze the effect on the systems' BER performance of the frequency-offset between the transmitter and receiver oscillators. And we present a frequency offset compensation method for improving the system performance. With the frequency offset compensation method implemented in the systems using DSP, the Eb/No performance degradation of about 1.0 dB was occurred at the BER of 10/sup -3 /for 10 % of frequency offset.
- KSP Keywords
- BER performance, Compensation method, DSP Implementation, Digital Modulation, Frequency offset compensation, Modulation scheme, System performance, Transmitter and receiver, no performance degradation, radio system, two-way