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1. (CN101238675) Estimating bit error probability(BEP) in an EDGE wireless system

Office : China
Application Number: 200680028910.4 Application Date: 22.06.2006
Publication Number: 101238675 Publication Date: 06.08.2008
Grant Number: 101238675 Grant Date: 01.08.2012
Publication Kind : B
Prior PCT appl.: Application Number:PCTUS2006024502 ; Publication Number:2007002417 Click to see the data
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.
高通股份有限公司
Inventors: Ghosh Kaushik
K·格什
Agents: qianwei min
上海专利商标事务所有限公司 31100
Priority Data: 11165297 22.06.2005 US
Title: (EN) Estimating bit error probability(BEP) in an EDGE wireless system
(ZH) 估计EDGE无线系统中的比特差错概率(BEP)
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 [mu] and s or A and s are determined. The ratio [mu]/s or A/s 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.
(ZH)

分布参数映射确定使用EDGE标准中所指定的一种调制和编码方案(MCS)将突发从基站发送到移动站的比特差错概率(BEP)。取决于该突发的多比特软判决是与Gaussian分布还是Rician分布最相似来确定统计参数μ和σ或A和σ。比率μ/σ或A/σ被分别映射到Gaussian或Rician查找表中根据经验确定的BEP。这些BEP不受MCS中码冗余度的影响。然后根据EDGE标准对一无线块中的4个突发的BEP求平均、滤波和量化。该平均BEP的量化水平被报告给基站以使得后续无线块能够使用适于该估计BEP的MCS来发送。


Also published as:
KR1020080027362EP2182668EP1908204JP2008547327US20060291591IN19/MUMNP/2008
WO/2007/002417