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Recent content by afolz

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    anybody working on WiMax (OFDMA) frame structure?

    Hello Colleagues, I see a relationship between this question and mine so I'm posting it here. (although this is 5yrs old already!) Could anyone please provide a clarification on the difference between Subcarrier permutation and Subcarrier allocation in WiMAX OFDMA.These terms are often confuse...
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    [WiMAX OFDMA]Subcarrier permutation and Allocation

    Hello Colleagues, Could anyone please provide a clarification on the difference between Subcarrier permutation and Sub-carrier allocation in WiMAX OFDMA.These terms are often confuse me. Are they used to mean same thing or different. Sometimes too, Resource Allocation and Scheduling are used...
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    Cyclic Prefix and Zero Padding.

    Hello All, I recently started studying OFDM systems. However, I'm kindof hazy about the differences, similarities or relationship(s) between cyclic prefix and zero padding. THankx
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    [Research Idea] MIMO-OFDM in Cognitive Radio?

    Dear All, I'm a newbie on this forum which is the most educative I've found so far :D I'm presently looking around for a research topic that incorporates MIMO-OFDM in Cognitive Radio Systems. I have good understanding of CRN since my MSc was on it. I know the 802.22WRAN uses OFDMA and several...

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