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1. (EP2182668) Estimating bit error probability (BEP) in an edge wireless system

Office : European Patent Office
Application Number: 10153460 Application Date: 22.06.2006
Publication Number: 2182668 Publication Date: 05.05.2010
Publication Kind : A1
Designated States: AL, AT, BA, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, NL, PL, PT, RO, RS, SE, SI, SK, TR
IPC:
H04L 1/20
H04L 25/03
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
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25
Baseband systems
02
Details
03
Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
CPC:
H04L 1/206
H04L 1/0003
H04L 1/0009
H04L 1/0026
H04L 1/203
Applicants: QUALCOMM INC
Inventors: GHOSH KAUSHIK
Priority Data: 06773847 22.06.2006 EP
11165297 22.06.2005 US
Title: (DE) Schätzung der Bitfehlerwahrscheinlichkeit (BEP) in einem drahtlosen EDGE-System
(EN) Estimating bit error probability (BEP) in an edge wireless system
(FR) Estimation d'une probabilité d'erreur sur les bits (BEP) dans un système sans fils EDGE.
Abstract: front page image
(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 µl/&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:
KR1020080027362EP1908204JP2008547327US20060291591CN101238675IN19/MUMNP/2008
WO/2007/002417