In this paper, we propose an enhanced detection scheme, called hybrid time-frequency domain decision feedback equalizer (DFE) combined with complementary code keying (CCK) remodulator. In the proposed scheme, the frequency domain feedforward filter is used to reduce the computational complexity.
Hybrid DFE Combined with CCK Remodulator. Frequency domain ZF and MMSE linear equalization are quite simple to implement, since the inversion of a diagonal matrix is easy to calculate.
To further improve the performance, we propose an enhanced detection scheme, that is, the hybrid DFE combined with CCK remodulator. The block diagram of the hybrid DFE combined with CCK remodulator is shown in Figure 5.
Compared to the conventional separate detection scheme, in our proposed scheme, a CCK remodulator block is added at the receiver end, which remodulates the decoded data from the output of the CCK demodulator and sends the output to the feedback filter of hybrid DFE.
CEA-761-B defines minimum specifications for a one-way data path utilizing an 8 VSB trellis or a 16 VSB remodulator
in compliance with ATSC Standard A/53, Annex D, and also defines on-screen display (OSD) capabilities.
The network had room for expansion and the cost of access would be a modem, headend remodulator, and the cost of implementing LANs in the appropriate locations, a necessity in any case.
provided a rapidly modified M8023 modem and HR8023 headend remodulator to accommodate the need for off-channel transmission of medical images.
It provides the ability to expand well beyond the IEEE 802.3 minimum standard transmission coverage area of 3600 meters to 4500 meters, while still using a headend remodulator to minimize interference with adjacent services.
A modified modem and headend remodulator expanded the broadband uses, and implementing the standard options of those devices cost far less than implementing an entire new network of fiber.
The A-B broadband system consists of a Data Gateway connecting the A-B Data Highway to the broadband network; the head-end remodulator
for controlling on-line network operations; a Network Interface Controller (NIC) for interfacing intelligent, high-speed devices to the LAN; and a terminal communication server to interconnect up to eight nonintelligent RS-232 devices to the broadband system.
ProTelevision Technologies supplies modulators and remodulators
for DVB-T (Digital Video Broadcasting - Terrestrial).
Allen-Bradley is now developing specialized components such as modems, head-end remodulators
and switch gearboxes, gateway modules, and terminal-communications servers.