Name
Abstract | ||
|---|---|---|
The performance of an infrared wireless spread spectrum system using biorthogonal codes under the effect of multipath dispersion is evaluated through theoretical analysis and computer simulations. The performance of the system with (i) biorthogonal Walsh codes and (ii) biorthogonal random codes are investigated in a simulated non-directed line-of-sight infrared channel. An approximation to the bit error probability is derived by using a Gaussian approximation for the intersymbol interference due to multipath propagation. The average probability of error as a function of signal-to-noise ratio is used as the performance criteria. Results show that a biorthogonal spread spectrum system is able to combat the effect of multipath dispersion since only small power penalties are incurred while increasing the system spectral efficiency. It is also observed that biorthogonal Walsh codes have a slightly worse performance than random biorthogonal codes in a less dispersive channel. However, the former has superior performance than the later in a more dispersive channel. Comparison of the analytical and simulation results show that the Gaussian approximation becomes more accurate in less dispersive channels and when the length of the code sequence increases |
Year | DOI | Venue |
|---|---|---|
2000 | 10.1109/PIMRC.2000.881559 | Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium |
Keywords | Field | DocType |
Gaussian processes,approximation theory,dispersive channels,error statistics,multipath channels,optical communication,optical links,random codes,spread spectrum communication,wireless LAN,Gaussian approximation,IR wireless communications,average error probability,biorthogonal Walsh codes,biorthogonal codes,biorthogonal random codes,biorthogonal spread spectrum system,bit error probability,code sequence length,computer simulation,dispersive channel,indoor wireless LAN,infrared wireless communications,intersymbol interference,line-of-sight infrared channel,multipath dispersion,multipath propagation,power penalties,signal-to-noise ratio,simulated nondirected LOS IR channel,spectral efficiency,spread spectrum system,system performance | Multipath propagation,Intersymbol interference,Computer science,Algorithm,Approximation theory,Real-time computing,Theoretical computer science,Gaussian process,Spectral efficiency,Biorthogonal system,Hadamard code,Spread spectrum | Conference |
Volume | ISBN | Citations |
2 | 0-7803-6463-5 | 1 |
PageRank | References | Authors |
0.48 | 2 | 2 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| K. K. Wong | 1 | 43 | 10.57 |
| Tim O'Farrell | 2 | 312 | 31.99 |