Hybrid turbo FEC/ARQ systems and distributed space-time coding for cooperative transmission
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Estadístiques de LA Referencia / Recolecta
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/1595
Tipus de documentArticle
Data publicació2005-08-24
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 2.5 Espanya
Abstract
Cooperative transmission can be seen as a "virtual" MIMO system, where the
multiple transmit antennas are in fact implemented distributed by the antennas both at the source and the relay terminal. Depending on the system design, diversity/multiplexing gains
are achievable. This design involves the definition of the type of retransmission (incremental
redundancy, repetition coding), the design of the distributed space-time codes, the error
correcting scheme, the operation of the relay (decode&forward or amplify&forward) and the
number of antennas at each terminal. Proposed schemes are evaluated in different conditions
in combination with forward error correcting codes (FEC), both for linear and near-optimum
(sphere decoder) receivers, for its possible implementation in downlink high speed packet
services of cellular networks. Results show the benefits of coded cooperation over direct
transmission in terms of increased throughput. It is shown that multiplexing gains are
observed even if the mobile station features a single antenna, provided that cell wide reuse of the relay radio resource is possible.
ISSN1068-9605
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Agustin.pdf | 376,8Kb | Visualitza/Obre |