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What is adaptive multirate coding?
written 9.0 years ago by gravatar for teamques10 teamques10 ★ 69k •   modified 9.0 years ago

This question appears in Mumbai University > Wireless Networks subject

Marks: 4 M & 5 M

Year: Dec 2013, May 2013
wireless networks
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written 9.0 years ago by gravatar for teamques10 teamques10 ★ 69k

Adaptive Multi-rate Coding

i. The adaptive multi-rate (AMR) codec has eight source rates; 4.75, 5.15, 5.90, 6.70 (PDC-EFR), 7.40 (IS-641), 7.95 (VSELP), 10.2 and 12.2 kbps (GSM-EFR) for use in UMTS and GSM.

ii. During high cell loading, such as during busy hours, the AMR codec uses lower bit rates …

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