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Difference between Resource Element Groups (REG) and PHICH Groups?

+4 votes

Can some can explain the difference between Resource Element Groups (REG) and PHICH Groups?

I'm still confused with the statement that says, "A total of 8 orthogonal sequences have been defined, so each PHICH group can carry up to 8 PHICHs."

posted Dec 2, 2014 by anonymous

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