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1. (IN19/MUMNP/2008) ESTIMATING BIT ERROR PROBABILITY (BEP) IN AN EDGE WIRELESS SYSTEM

Office : India
Application Number: 19/MUMNP/2008 Application Date: 04.01.2008
Publication Number: 19/MUMNP/2008 Publication Date: 26.06.2009
Grant Number: 254859 Grant Date: 28.12.2012
Publication Kind : B
Prior PCT appl.: Application Number:PCTUS2006024502 ; Publication Number:WO2007002417A1 Click to see the data
IPC:
H04L 1/20
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1
Arrangements for detecting or preventing errors in the information received
20
using signal-quality detector
Applicants:
Inventors: GHOSH, KAUSHIK
Priority Data:
Title: (EN) ESTIMATING BIT ERROR PROBABILITY (BEP) IN AN EDGE WIRELESS SYSTEM
Abstract:
(EN) Distribution parameter mapping determines the bit error probability (BEP) of a burst transmitted from a base station to the mobile station using a modulation and coding scheme (MCS) specified in the EDGE standard. Depending on whether the multi-bit soft decisions of the burst most resemble a Gaussian or a Rician distribution, the statistical parameters µ and &sgr; or A and &sgr; are determined. The ratio µ/&sgr; or A/&sgr; is mapped to an empirically determined BEP in a Gaussian or Rician lookup table, respectively. The BEPs are not influenced by the degree of code redundancy in the MCS. The BEPs for the four bursts in a radio block are then averaged, filtered and quantized according to the EDGE standard. The quantization level of the average BEP is reported to the base station so that subsequent radio blocks can be transmitted using an MCS that is appropriate for the estimated BEP.
Also published as:
KR1020080027362EP2182668EP1908204JP2008547327US20060291591CN101238675
WO/2007/002417