Name
Abstract | ||
|---|---|---|
Cyclic delay diversity (CDD) provides additional diversity in Rayleigh fading channels, and therefore, improves the system performance. For line-of-sight (LOS) propagation, e.g., the additive white Gaussian noise channel, the implementation of CDD yields to a performance loss. The power distribution among the transmit (TX) antenna branches is a further parameter which can freely be chosen for optimizing the system performance and allows to switch on/off CDD softly. The idea is to feed different power levels into the multiple TX antenna branches rather than distributing the TX power uniformly among the TX antennas. We exemplarily implement the soft CDD principle to the terrestrial digital video broadcasting system (DVB-T). We consider a Ricean multipath fading channel, which allows to control the ratio of LOS and non-LOS propagation power via the Ricean factor for simulations. Simulation results for 2-TX and 4-TX antenna CDD show that antenna power weighting significantly reduces the SNR loss in LOS propagation by the cost of a slight degradation of the SNR gain in non-LOS scenarios. I. I NTRODUCTION Multiple antenna transmission schemes have gained a high attraction since they offer a capacity which rises proportional to the minimum of the number of transmit (TX) and receive (RX) antennas from information theory point of view. In the |
Year | DOI | Venue |
|---|---|---|
2007 | 10.1109/GLOCOM.2007.801 | Washington, DC |
Keywords | Field | DocType |
Rayleigh channels,Rician channels,digital video broadcasting,DVB-T,Rayleigh fading channel,Rician channels,line-of-sight propagation,soft cyclic delay diversity,terrestrial digital video broadcasting system,transmit antenna power distribution | Multipath propagation,Weighting,Rayleigh fading,Telecommunications,Computer science,DVB-T,Gaussian channels,Communication channel,Electronic engineering,Real-time computing,Digital Video Broadcasting,Cyclic delay diversity | Conference |
ISSN | ISBN | Citations |
1930-529X | 978-1-4244-1043-9 | 9 |
PageRank | References | Authors |
0.80 | 4 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| armin dammann | 1 | 212 | 36.06 |
| Ronald Raulefs | 2 | 196 | 19.66 |
| Simon Plass | 3 | 169 | 22.49 |