http://iet.metastore.ingenta.com
1887

## Wideband nonlinearities correction in digital payloads channels with parallel architectures

• Author(s):
• DOI:

$16.00 (plus tax if applicable) ##### Buy Knowledge Pack 10 chapters for$120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:

Advances in Communications Satellite Systems Proceedings of The 36th International Communications Satellite Systems Conference (ICSSC-2018) — Recommend this title to your library

## Thank you

The problem domain related to the correction of wideband non-linearities on satellite receiving or transmitting chains is more and more increasing due to the need of satellite missions with high throughput data handling, high precision accuracy and high energy efficiency. Typical non-linear distortions could be introduced by different active on-board devices in the RX/TX chains such as LNA, mixers, active filters, A/D and D/A converters and high power amplifiers (in low back-off operations). Modeling wideband distortions requires the introduction of memory effects, to account for more complex distortion mechanisms than static polynomial nonlinear models. In multi-channel (beam-forming) receivers/transmitters, especially if wideband, the data rate increases with the number and bandwidth of channels, and so does the need for hardware resources. Generalized models based on Volterra kernels are hardware-consuming, especially when applied for wideband systems with high data rates and potentially long memory effects. In this paper the architecture of a Volterra filter, adapted in order to exploit high parallelism in a possible target space hardware, is presented, taking into account the design constraint to keep digital complexity to a minimum by using a priori (restricted models) or a posteriori (pruning) techniques for complexity reduction and low power exploitation. Finally, the implementation of this filter performed on a many-core processors technology, in order to achieve high throughput performances on beam-forming and wideband systems, is evaluated in terms of computational cost and I/O, taking into account data rates, memory requirements, data dependencies, and raw processing power.

Preview this chapter:

Wideband nonlinearities correction in digital payloads channels with parallel architectures, Page 1 of 2

| /docserver/preview/fulltext/books/te/pbte086e/PBTE086E_ch10-1.gif /docserver/preview/fulltext/books/te/pbte086e/PBTE086E_ch10-2.gif

### Related content

content/books/10.1049/pbte086e_ch10
pub_keyword,iet_inspecKeyword,pub_concept
6
6
This is a required field