SPCp1-03: Orthogonal Codes for MAI-Free MC-CDMA with Carrier Frequency Offsets (CFO)

@article{Tadjpour2006SPCp103OC,
  title={SPCp1-03: Orthogonal Codes for MAI-Free MC-CDMA with Carrier Frequency Offsets (CFO)},
  author={Layla Tadjpour and Shang-Ho Tsai and C.-C. Jay Kuo},
  journal={IEEE Globecom 2006},
  year={2006},
  pages={1-5}
}
The performance of MC-CDMA in the presence of carrier frequency offsets (CFO) can be severely degraded due to multiaccess interference (MAI). It is shown in this work that a properly chosen subset of real Hadamard-Walsh or exponential codes can achieve zero MAI in a CFO environment. For a channel of length L and a number G of power of 2 with G ges L, we prove that 1 + log2 (iV/G) Hadamard-Walsh codewords or N/G exponential codewords can achieve zero MAI under any CFO level. Simulation results… CONTINUE READING
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