Name
Abstract | ||
|---|---|---|
Received ultra wideband (UWB) signals in most indoor environments are stochastic in nature, typically composed of abundant multi-path components with random attenuation and arrival time. A commonly adopted detection strategy is to use a chosen deterministic template to correlate the received signal segment by segment, and only those segments having significant cross-correlation with the template are selected, temporally synchronized and co-phased in their projections for coherent combining. Correlating a deterministic template with a random signal usually results in only partial energy captured by the receiver since a random signal is of multidimensions. In this paper, we construct a receiver with multiple orthogonal branches to fully capture the signal energy, in much the same way as a quadrature receiver does in conventional digital communications. The local reference signals are derived from the orthogonal expansion of UWB signals. The random projections of a UWB signal onto different orthogonal basis functions are non-coherently combined, leading to the concept of dimension diversity. Dimension diversity can be either used alone, or alongside a Rake receiver to further exploit path diversity. The error performance of proposed receivers is analyzed, and their superiority over the conventional ones is examined by numerical results based on real UWB data |
Year | DOI | Venue |
|---|---|---|
2006 | 10.1109/VETECS.2006.1683075 | Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd |
Keywords | Field | DocType |
digital communication,diversity reception,radio receivers,signal detection,ultra wideband communication,Rake receiver,UWB signal detection,digital communications,dimension diversity,ultra wideband signals,Dimension diversity,Rake receiver,UWB receivers,detection of random UWB signals,path diversity | Rake receiver,Detection theory,Computer science,Orthogonal basis,Electronic engineering,Ultra-wideband,Energy (signal processing),Quadrature (mathematics),Attenuation,Orthogonal expansion | Conference |
Volume | ISSN | ISBN |
3 | 1550-2252 E-ISBN : 0-7803-9392-9 | 0-7803-9392-9 |
Citations | PageRank | References |
1 | 0.37 | 8 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Song, S.H. | 1 | 1 | 0.37 |
| Keith Q. T. Zhang | 2 | 240 | 22.34 |