0899906-A2 is referenced by 54 patents and cites 2 patents.

In a system and method to measure channel quality in terms of signal to noise ratio for the transmission of coded signals over fading channels, a Viterbi decoder metric for the Maximum Likelihood path is used as a channel quality measure. This Euclidean distance metric is filtered in order to smooth out short term variations. The filtered or averaged metric is a reliable channel quality measure which remains consistent across different coded modulation schemes and at different mobile speeds. The filtered metric is mapped to the signal to noise ratio per symbol using a threshold based scheme. Use of this implicit signal to noise ratio estimate is used for the mobile assisted handoff and data rate adaptation in the transmitter.

Title
System and method for measuring channel quality information
Application Number
EP19980306614 19980818
Publication Number
0899906 (A2)
Application Date
August 18, 1998
Publication Date
March 3, 1999
Inventor
Ejzak Richard Paul
US
Nanda Sanjiv
US
Kadaba Srinivas R
US
Balachandran Krishna
US
Assignee
Lucent Technologies
US
IPC
H04L 01/20
H04L 27/34
H04L 27/18
H04L 01/20
H04L 01/00
H04B 17/00
H04B 07/26
H03M 13/00
H04L 27/00
H04L 27/34
H04L 27/18
H04L 01/20
H04L 01/00
H04B 17/00
H04B 07/26
H03M 13/23
H04L 27/00
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