This development project envisages evolving previously developed Burst Mode Demodulator, version 1 (BMD-V1), in order to provide the demodulation of a complete bandwidth of 20 MHz, independent of the configuration of the carriers within that bandwidth. This evolution relies on the design of the first version of Burst Mode Demodulator BMD-V1 equipment for synchronisation and decoding. The design requires a complete re-definition, design and development of the digital filter functions. It aims at the reception of up to 256 carriers, without increase of the equipment cost.
A significant cost reduction of the investment cost of Burst Mode Demodulator per carrier is offered to integrators of DVB-RCS compliant systems. This major feature is complemented by additional functionalities and performance improvements.
This feature turns BMD-V2 into a key building block of Alcatel's A9780 R2.x multimedia system.
Other requirements driving this developme
The main difference in the digital part of the Burst Mode Demodulator between version 1 and version 2 (=bandwidth-efficient version) is the Channel selection / matched filtering module. While in BMD V1, the Channel Selection and Matched Filtering block is composed of four receive chains, in BMD-V2 the channel selection will allow to select and filter all channels located within the input bandwidth of 20 MHz.
Two categories of applications are identified for the burst demodulator :
Besides the adaptation of the filtering algorithms of the BMD-V1.x, the following improvements will also be implemented:
|Kick off||August 2004|
|Baseline Design Review Meeting (BDR)||December 2004|
|Mid term Review (MTR)||July 2005|
|Prototype Acceptance Review (PAR)||October 2005|
|Final Review 2 (FR)||March 2006|
First Industrialised BMD-V2 equipment was ready in June 2006. The Final Review passed successfully and BMD-V2 is available as a product.