Effect of adjacent carrier interference on SNR under the overlapping carrier allocation scheme in FD/DS-CDMA

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Effect of adjacent carrier interference on SNR under the overlapping carrier allocation scheme in FD/DS-CDMA

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The authors investigate the effect of adjacent carrier interference on the SNR under the overlapping carrier allocation scheme in FD/DS-CDMA. Filtering in transmitters and receivers is also considered. Analysis shows that interference caused by 20 other users in adjacent carriers is equivalent to the multiple access interference from one user within the desired carrier if the spectral spacing between adjacent carriers is 1.16 times the chip rate.

Inspec keywords: code division multiple access; adjacent channel interference; mobile radio

Other keywords: chip rate; adjacent carrier interference; filtering; SNR; spectral spacing; FD/DS-CDMA; overlapping carrier allocation scheme

Subjects: Mobile radio systems; Multiple access communication; Electromagnetic compatibility and interference

References

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      • R. Ziemer , R. Peterson . (1985) Digital communications and spread spectrum systems.
    2. 2)
      • A. Papoulis . (1965) Probability, random variables, and stochastic processes.
    3. 3)
      • Behbahani, F., Hashemi, H.: `On spectral efficiency of CDMA mobile radio systems', IEEE ICC'93, 1993, p. 505–509.
    4. 4)
      • J. Lee , R. Tafazolli , B.G. Evans . Performance of the overlapping carrier allocation scheme in FD/CDMA.
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