Name
Title | ||
|---|---|---|
Non-data-aided distorted constellation estimation and demodulation for mmWave communications |
Abstract | ||
|---|---|---|
The signal constellation of 60 GHz millimeter wave (mmWave) communications is distorted by power amplifier (PA) nonlinearity seriously and the bit error rate (BER) performance declines, due to the huge bandwidth and high equivalent isotropic radiated power (EIRP), especially for quadrature amplitude modulation (QAM) signals. This paper aims at non-data-aided (NDA) distorted constellation (DC) estimation and demodulation to deal with PA nonlinearity. An estimation algorithm of expectation-maximization (EM) is proposed and the corresponding Cramer-Rao lower bounds (CRLBs) are calculated, then the estimated DC is used as reference for demodulation. Simulation results indicate that the means of the estimation results are unbiased and the mean square errors (MSEs) reach the CRLBs under easy requirements on signal-to-noise ratio (SNR) and output power back-off (OBO). Additionally, with PA nonlinearity, the BER performance of the presented DC demodulation is close to that of the ideal PA case, and much superior to that of the traditional standard constellation (SC) demodulation. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/ICC.2012.6363819 | ICC |
Keywords | Field | DocType |
demodulation,output power back-off,expectation-maximisation algorithm,bit error rate,constellation estimation,equivalent isotropic radiated power,standard constellation,cramer-rao lower bound,signal constellation,expectation-maximization algorithm,dc estimation,pa nonlinearity,mmwave,distortion,mmwave communications,power amplifier,millimeter wave communications,mean square errors method,sc demodulation,mse,cramer-rao lower bounds,eirp,quadrature amplitude modulation,millimetre wave power amplifiers,frequency 60 ghz,non-data-aided,ber performance,obo,snr,qam signals,nondata-aided distorted constellation estimation,error statistics,crlb,em algorithm,mean square error methods,signal-to-noise ratio,estimation,cramer rao lower bound,signal to noise ratio,expectation maximization algorithm,nonlinear distortion | Cramér–Rao bound,Demodulation,Telecommunications,Quadrature amplitude modulation,Computer science,QAM,Real-time computing,Electronic engineering,Constellation diagram,Effective radiated power,Amplifier,Bit error rate | Conference |
Volume | Issue | ISSN |
null | null | 1550-3607 E-ISBN : 978-1-4577-2051-2 |
ISBN | Citations | PageRank |
978-1-4577-2051-2 | 0 | 0.34 |
References | Authors | |
6 | 5 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Changming Zhang | 1 | 24 | 4.16 |
| Zhenyu Xiao | 2 | 487 | 35.96 |
| Xiaoming Peng | 3 | 95 | 20.72 |
| Depeng Jin | 4 | 2177 | 154.29 |
| Lieguang Zeng | 5 | 752 | 56.75 |