Benefits of modulation diversity in turbo-coded OFDM systems
2004 (English)Conference paper, Meeting abstract (Refereed)
In this paper we show that the use of modulation diversity provides gains to punctured, turbo-coded OFDM systems. For an OFDM transmission scenario based on the downlink of the 3GPP standard for mobile communications, we show that the order-2 modulation diversity observed for the raw bit-error rate transfers to the block-error rate in a number of investigated channel environments. We demonstrate gains of up to 2.5 dB depending on the puncturing rate of the scheme and the particular channel characteristics. Alternatively, for schemes with higher puncturing rates, 2 or 3 turbo decoder iterations suffice to achieve the same performance as achieved by 8 decoder iterations in a regular transmission
Place, publisher, year, edition, pages
2004. Vol. 59, 929-933 p.
Research subject Signal Processing
IdentifiersURN: urn:nbn:se:ltu:diva-38086Local ID: c5a7f38a-e366-42cc-8592-407553e9c0b1OAI: oai:DiVA.org:ltu-38086DiVA: diva2:1011585
Godkänd; 2004; 20140815 (andbra)2016-10-032016-10-03Bibliographically approved