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HARQ

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HARQ
(Hybrid Automatic Repeat ReQuest) A technique that enables faster recovery from errors in cellular networks by storing corrupted packets in the receiving device rather than discarding them. Even if retransmitted packets have errors, a good packet can be derived from the combination of bad ones. See HSPA.


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Even though this does not take the exact sub-band condition into account at re-transmission stage, the practical implementation is simplified, in terms of control signalling, and re-transmissions anyway always benefit from the HARQ combining gain [6].
The research was compiled through analysis of IEEE declarations of essentiality as well as a full search of patents relating to OFDM, OFDMA, Beamforming, SDMA, HARQ, SC-FDMA, MIMO and Fast Power Control.
 
 
 
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