However, for long delay spread channels such as the ones ATSC digital television (DTV) receivers are facing, FS equalizers covering the entire range of multipath delays are often impractical due to hardware limitations.
Low-density parity-check (LDPC) codes were first introduced by Gallager in 1962, but they were rarely used since implementing them in hardware was impractical in the 1960s.
As discussed so far, most approaches rely on impractical assumptions such as additional hardware or time invariant channels.
The deficiency of these techniques is that the complexity is extraordinary and at the same time, the hardware realization is impractical.
Not surprisingly, the process is extremely slow compared to hardware mining and is entirely impractical.
DNA and quantum computing remain intriguing possibilities that, even if they prove impractical, may lead to further advances in the hardware of future computers.
During that time, they attracted little attention, since hardware implementation of such decoding was impractical in the 1960s, and has been neglected since.
In its continuing mission to make Kentucky fried everything by 2020, KFC has created a range of chicken-themed hardware including a keyboard, mouse and grossly impractical USB stick.
According to our results, any implementation involving the diagonal function proposed to date results in excessive hardware overhead and delay, which make it impractical from the application point of view, so that it cannot compete with more traditional approaches.
Since the 8-ch algorithms generally impose severe hardware constraints on the overall system and are impractical in many situations, 1-ch algorithms must achieve the recognition performance currently achieved by 8-ch systems.
