Effect of Channel Noise on Fractionally Spaced CMA and MMA | IEEE Conference Publication | IEEE Xplore

Effect of Channel Noise on Fractionally Spaced CMA and MMA


Abstract:

This paper analyzes and compares the robustness of the constant modulus algorithm (CMA) and multimodulus algorithm (MMA) in the presence of additive channel noise when th...Show More

Abstract:

This paper analyzes and compares the robustness of the constant modulus algorithm (CMA) and multimodulus algorithm (MMA) in the presence of additive channel noise when the channel satisfies the zero-forcing conditions. A generalized formulation of the relocation of stationary points toward the origin in terms of signal-to-noise ratio (SNR) was developed for both the CMA and the MMA to facilitate the comparison of the sensitivity to channel noise of CMA with that of MMA for various source constellations. Relationships between the relocation of the stationary points for the MMA and CMA were derived. Simulation results appear to confirm the main results of this work, regarding the sensitivity to channel noise when the fractionally spaced CMA (FS-CMA) and fractionally spaced MMA (FS- MMA) criteria were applied with various sources.
Date of Conference: 03-06 September 2012
Date Added to IEEE Xplore: 31 December 2012
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Conference Location: Quebec City, QC, Canada

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