Abstract :
Presents an equalisation technique consistent with the use of block coding. The received stream is treated as a series of blocks, rather than a continuous sequence, and intersymbol interference is removed by applying an inverse transformation to each block separately. Some interference between blocks will occur due to dispersion, but this this will be small provided the blocks are long compared to the delay spread. Viterbi equalisation can give rise to unlimited processing delay, whereas in block equalisation the delay is limited to the block length. Similarly, unlimited error propagation can occur in the Viterbi algorithm, while with block equalisation errors are limited to one block
Keywords :
encoding; fading; filtering and prediction theory; interference suppression; intersymbol interference; telecommunication channels; Viterbi equalisation; block coding; delay spread; dispersive fading channels; equalisation; error propagation; intersymbol interference; inverse transformation; processing delay; signal processing;