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Given the requirements for a next-generation PON, the architecture of the system solution must be considered. There are many different systems that can provide the services and system-level features desired for a next generation PON; however, each has its own challenges and advantages. This article presents the set of possible solutions, and puts them into perspective of likely standardization. It also considers how the key requirement of coexistence could be accommodated.
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Effenberger et al. (2009) studied this question.
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