Huang, Y. and Wang, J.Z. (2010) Multiple LDPC-Encoder Layered Space-Time-Frequency Architectures for OFDM MIMO Multiplexing. Wireless Personal Communications .
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Abstract
This paper is focused on the study of layered space-time-frequency (LSTF)architectures with channel coding for orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) multiplexing systems for high speed wireless communicationsover a frequency-selective fading channel. In order to achieve the available spatial,temporal and frequency diversities, and also make the system implementation feasible for high speed OFDM MIMO multiplexing, a novel LSTF architecture with multiple channel encoders is proposed with each independently coded layer being threaded in the three-dimensional space-time-frequency transmission resource array. Non-iterative receiver is adopted which consists of list sphere detector and irregular low-density parity-check codes as the constituent codes. Simulation results show that the performance of the proposed multipleencoder LSTF architecture is very close to that of the conventional single-encoder LSTF where coding is applied across the whole information stream. However, due to the use of multiple parallel encoders/decoders with a shorter codeword length, the proposed LSTF architecture has much lower hardware processing speed and complexity than the conventional LSTF.
| Item Type: | Article |
|---|---|
| Uncontrolled keywords: | OFDM, MIMO multiplexing, Threaded layered space-time-frequency architecture, List sphere detection, Irregular-LDPC code, Imperfect channel estimation |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunications > TK5103.4 Broadband (inc wireless broadband) |
| Divisions: | Faculties > Science Technology and Medical Studies > School of Engineering and Digital Arts > Broadband & Wireless Communications |
| Depositing User: | Jenny Harries |
| Date Deposited: | 08 Feb 2011 14:20 |
| Last Modified: | 08 Feb 2011 14:20 |
| Resource URI: | http://kar.kent.ac.uk/id/eprint/26322 (The current URI for this page, for reference purposes) |
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