Space–time block code | Wikipedia audio article
Channel: wikipedia tts
Date: 02/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Space%E2%80%93time_block_code


00:01:05 1 Introduction
00:07:07 1.1 Orthogonality
00:08:22 2 Design of STBCs
00:08:56 2.1 Diversity criterion
00:17:59 3 Encoding
00:18:09 3.1 Alamouti's code
00:21:16 3.2 Higher order STBCs
00:22:16 3.2.1 3 transmit antennas
00:29:57 3.2.2 4 transmit antennas
00:42:15 4 Decoding
00:50:07 5 Rate limits
00:54:17 6 Quasi-orthogonal STBCs
00:57:49 7 See also



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Voice name: en-GB-Wavenet-C


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SUMMARY
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Space–time block coding is a technique used in wireless communications to transmit multiple copies of a data stream across a number of antennas and to exploit the various received versions of the data to improve the reliability of data transfer. The fact that the transmitted signal must traverse a potentially difficult environment with scattering, reflection, refraction and so on and may then be further corrupted by thermal noise in the receiver means that some of the received copies of the data will be 'better' than others. This redundancy results in a higher chance of being able to use one or more of the received copies to correctly decode the received signal. In fact, space–time coding combines all the copies of the received signal in an optimal way to extract as much information from each of them as possible.