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Analysis of Channel Capacity for Spread Spectrum Watermarking Systems  

Kim, Joo-Chan (광운대학교 전자융합공학과 LUC 연구실)
Bae, Jung-Nam (광운대학교 전자융합공학과 LUC 연구실)
Kim, Jin-Young (광운대학교 전자융합공학과 LUC 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.5C, 2010 , pp. 439-444 More about this Journal
Abstract
In this paper, we derive and analyze the channel capacity of the spread spectrum watermarking (SSW) system as an information-theoretic point of view in closed-form approximation formula in order to analyze the effect of the wireless multipath/shadowing channel. It is important to analyze the channel capacity to transmit an additive data through existing wireless channel by the SSW system. From the results, we confirm that the channel capacity of the SSW system can be determined by the HWR, WNR, PN length and host sampling frequency. Also, we verified that the variation of the channel capacity when the SSW system applied to Nakagami-m fading and Log-normal shadowing channel. The results of this paper can be applied to general spread spectrum watermarking system.
Keywords
Channel Capacity; Multipath/Shadowing; Spread Spectrum Watermarking;
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