Name
Abstract | ||
|---|---|---|
This paper discusses a new approach for implementing flexible frequency-band reallocation (FFBR) networks for bentpipe satellite
payloads which are based on variable oversampled complex-modulated filter banks (FBs). We consider two alternatives to process
real signals using real input/output and complex input/output FFBR networks (or simply real and complex FFBR networks, respectively).
It is shown that the real case has a lower overall number of processing units, i.e., adders and multipliers, compared to its
complex counterpart. In addition, the real system eliminates the need for two Hilbert transformers, further reducing the arithmetic
complexity. An analysis of the computational workload shows that the real case has a smaller rate of increase in the arithmetic
complexity with respect to the prototype filter order and number of FB channels. This makes the real case suitable for systems
with a large number of users. Furthermore, in the complex case, a high efficiency in FBR comes at the expense of high-order
Hilbert transformers; thus, trade-offs are necessary. Finally, the performance of the two alternatives based on the error
vector magnitude (EVM) for a 16-quadrature amplitude modulation (QAM) signal is presented. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1007/s00034-008-9090-3 | Circuits Systems and Signal Processing |
Keywords | Field | DocType |
flexible frequency-band reallocation · multi-input multi-output · discrete fourier transform · hilbert transformer · arithmetic complexity · error vector magnitude | Adder,Frequency band,Prototype filter,Control theory,QAM,Communication channel,Electronic engineering,Amplitude modulation,Discrete Fourier transform,Mathematics,Payload | Journal |
Volume | Issue | ISSN |
28 | 3 | 1531-5878 |
Citations | PageRank | References |
2 | 0.38 | 20 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Amir Eghbali | 1 | 70 | 9.07 |
| Håkan Johansson | 2 | 505 | 65.36 |
| Per Lowenborg | 3 | 395 | 40.45 |