Turbo encoder with transmitter diversity

   
   

Turbo coding is employed with space-time spreading (STS) transmission to improve transmission error performance and efficiency in addressing multipath fading. Different subsets of parity data are transmitted via each antenna/channel, with either subset alone sufficient for error recovery. In general, however, both channels will be received with some fidelity, and the parity data from the two channels is combined and decoded as a lower code rate transmission. Systematic data may be transmitted on both channels, with or without interleaving on an alternate channel. Time diversity may also be introduced by transmitting only part of the parity data within the two parity data subsets, then transmitting the remainder if the receiver could not produce the correct decoding from the original transmission.

_ turbo coding est empreg com espaço-tempo spreading (sts) transmissão melhor transmissão erro desempenho e eficiência addressing multipath fading. _ diferente subconjunto paridade dados est transmitted através cada antenna/channel, com um ou subconjunto sozinho suficiente para erro recuperação. _ geral, entretanto, ambo canaleta est received com algum fidelity, e paridade dados dois canaleta est combined e descodific como um baixo código taxa transmissão. _ sistemático dados poss est transmitted ambo canaleta, com ou sem intercal um alterno canaleta. _ tempo diversidade poss também est introduced transmitting somente peça paridade dados dentro dois paridade dados subconjunto, então transmitting restante se receptor poss não produz correto decoding original transmissão. _

 
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