Preamble structures for single-input, single-output (SISO)...

Details Preamble structures for single-input, single-output (SISO)... Preamble structures for single-input, single-output (SISO)...

2007-09-11

2007-09-11

Pezzlo, John (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Fourier transform

C370S430000, C370S482000, C375S144000

Reexamination Certificate

active

10264546

ABSTRACT:
A communication system is provided herein for transmitting frames across a channel. The frames may be transmitted in single-input, single-output (SISO) and/or multi-input, multi-output (MIMO) communication systems. One such frame includes at least one training symbol, each having a cyclic prefix and a training block. The time length NIof the training block is equal to an integer fraction I of the time length of a data block, i.e., NI=N/I. Furthermore, the time length G of the cyclic prefix is an integer fraction of the time length NI. For example, G may be equal to NI/4 or 25% of NI. The training symbols provide coarse and fine time synchronization, coarse and fine frequency synchronization, channel estimation, and noise variance estimation.

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