Name
Abstract | ||
|---|---|---|
Time domain synchronous orthogonal frequency division multiplex (TDS-OFDM) is an effective multi-carrier modulation scheme to improve the spectrum efficiency. However, conventional synchronization algorithm based on the correlation property of the time-domain pseudo-noise (PN) sequence may not work well over severe multipath fading channels when large carrier frequency offset (CFO) exits. In this paper, a robust synchronization algorithm is proposed where the PN sequence in the frame head is considered as a cyclic prefix (CP) OFDM training symbol. The time-domain slide auto-correlation based on the cyclic structure of the PN sequence is adopted for timing and fine CFO estimation, while in the frequency domain, a differential correlation is applied for large CFO estimation. Simulations demonstrate that the proposed method could achieve the satisfactory performance over multipath fading channels. In addition, to reduce the implementation complexity, the frame head of the TDS-OFDM system is preferred to be binary PN sequences in the frequency domain with cyclic structure in the time domain. |
Year | DOI | Venue |
|---|---|---|
2010 | 10.1109/TCE.2010.5681083 | IEEE Trans. Consumer Electronics |
Keywords | Field | DocType |
spectrum efficiency,time domain,frequency division multiplex,differential correlation,cyclic prefix ofdm training symbol,binary sequences,frequency estimation,time-domain slide autocorrelation,time-domain pseudo-noise sequence,effective multicarrier modulation scheme,cyclic structure,multipath fading channel.,fading channels,ofdm modulation,multipath fading channel,frequency-domain analysis,binary pn sequence,multipath channels,synchronization algorithm,time domain synchronous orthogonal frequency division multiplexing,binary pn sequences,training sequence,frame head,time-domain analysis,time domain synchronous orthogonal frequency division multiplex,cyclic prefix,carrier frequency offset,frequency domain,pn sequence,synchronization,cp ofdm training symbol,multipath fading channels,cfo estimation,large carrier frequency,synchronisation,time domain synchronous orthogonal,tds-ofdm system,spectrum,fading,correlation,ofdm,frequency domain analysis,estimation | Multipath propagation,Frequency domain,Time domain,Synchronization,Cyclic prefix,Fading,Computer science,Carrier frequency offset,Electronic engineering,Orthogonal frequency-division multiplexing | Journal |
Volume | Issue | ISSN |
56 | 4 | 0098-3063 |
Citations | PageRank | References |
14 | 0.69 | 11 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Lifeng He | 1 | 441 | 40.97 |
| Fang Yang | 2 | 490 | 68.41 |
| Chao Zhang | 3 | 24 | 2.47 |
| Zhaocheng Wang | 4 | 2359 | 147.30 |