Abstract
Differential orthogonal space-time modulation (DOSTM) with amplitude/phase shift keying (APSK) signals has been recently proposed to improve the data throughput of the DOSTM with PSK signals over quasi-static channels. In this letter, decision feedback differential detection (DF-DD) based on linear prediction is presented for the DOSTM with APSK Signals (DOSTM-APSK) over flat-fading channels. The proposed DF-DD offers better performance than the differential detection when the channel experiences fast fading. The coefficients of the linear prediction based DF-DD can be obtained by an adaptive recursive least-squares algorithm, where the channel statistics are not needed. The proposed DF-DD is also applicable to the general unitary differential space-time modulation.
| Original language | English |
|---|---|
| Pages (from-to) | 1873-1875 |
| Number of pages | 3 |
| Journal | IEEE Transactions on Wireless Communications |
| Volume | 3 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Nov 2004 |
| Externally published | Yes |
Keywords
- Amplitude/phase shift keying (APSK)
- Decision feedback differential detection (DF-DD)
- Differential orthogonal space-time modulation (DOSTM)
- Orthogonal space-time codes