Name
Title | ||
|---|---|---|
Bandwidth efficient transmultiplexers. II. Subband complements and performance aspects |
Abstract | ||
|---|---|---|
For pt.I see ibid., vol.40, no.1, p.70-84 (1992). The performance issues related to the quadrature amplitude modulation (QAM) and vestigial sideband (VSB) transmultiplexers synthesized previously are examined. An analysis of the limitations of the configured systems regarding intersymbol interference and crosstalk suppression arising from the use of practical filters is made. A new design technique for an finite impulse response (FIR) low-pass prototype that takes the practical degradations into account is formulated. The procedure involves the unconstrained optimization of an error function. A performance evaluation reveals that for four of the five systems, the new method is superior to a minimax approach in that lower intersymbol interference and crosstalk distortions are achieved with a fewer number of filter taps. For the other transmultiplexer, the advantage of the optimized design over the minimax design is in the added flexibility of taking crosstalk into account, thereby diminishing the crosstalk distortion. The five transmultiplexers can be converted into new subband systems. The authors show how the optimized design approach formulated for the transmultiplexers over to the new subband systems |
Year | DOI | Venue |
|---|---|---|
1992 | 10.1109/78.134474 | Signal Processing, IEEE Transactions |
Keywords | Field | DocType |
amplitude modulation,crosstalk,digital filters,interference suppression,intersymbol interference,low-pass filters,multiplexing equipment,transmultiplexing,FIR low-pass filter,QAM transmultiplexers,VSB transmultiplexers,crosstalk suppression,intersymbol interference suppression,optimized design,performance,subband systems | Sideband,Intersymbol interference,Quadrature amplitude modulation,Digital filter,Control theory,QAM,Low-pass filter,Finite impulse response,Distortion,Mathematics | Journal |
Volume | Issue | ISSN |
40 | 5 | 1053-587X |
Citations | PageRank | References |
8 | 0.77 | 9 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ravi P. Ramachandran | 1 | 209 | 40.91 |
| P. Kabal | 2 | 374 | 47.49 |