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Incremental redundancy



Incremental redundancy initially uses a coding

scheme, such as MCS9, with very little error protection

and without consideration for the actual radio link

quality. When information is received incorrectly,

additional coding is transmitted and then soft

combined in the receiver with the previously received

information. Soft-combining increases the probability

of decoding the information. This procedure will be

repeated until the information is successfully decoded.

This means that information about the radio link is not

necessary to support incremental redundancy. For the

mobile stations, incremental redundancy support is

mandatory in the standard.








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