SISO MMSE-PIC detector in MIMO-OFDM systems
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 5
Abstract
MIMO-OFDM with bit-interleaved coded modulation (BICM) is an attractive technique for wireless communications over frequency selective fading channels which has gained significant interests as a promising candidate for the 4th Generation wireless communication. The SISO MMSE-PIC based detector is proposed in this paper. The SISO MMSE-PIC detector exchanges soft information with SISO channel decoder through iterative process. For reduction complexity, the Max Log MAP approximations decoder is exploited for iterative BICM decoding of MIMO-OFDM under perfect channel knowledge. Simulation results in the IEEE 802.11 channel model show that the SISO MMSE-PIC iterative detector decoder leads to a clear improvement of the performance than the SISO ZF-PIC based detector with saturation at 4th iterations. For a large number of iterations, the performance improvement is not significant which could be investigated for practical reduction complexity considerations. Furthermore, for a 10−2 bit error rate BER target, the gain in the performance of the SISO MMSE-PIC is approximately about 3dB when the number of antennas is twice. The performance of the SISO MMSE-PIC under different modulation schemes for MIMO-OFDM systems shows that with lower modulation size, the method can perform better and decreases when the channel delay spreads is increased.
Authors and Affiliations
A. Bensaad
Keywords
Related Articles
- EP ID EP130962
- DOI -
- Views 92
- Downloads 0
Simulink Modeling of Novel Hybrid H-Bridge Inverter for Smart Grid Application
Abstract: Hybrid H- bridge inverter. The proposed novel cascaded Hybrid H-bridge produces higher voltage levels with less number this paper presents a single-phase multistring Multi-level photovoltaic (PV) inv...
PERSONALIZATION CONCEPT BASED USER PROFILE ON SEARCH ENGINE
In the present days the search engines return the same results for the same query, regardless of the user’s interest. So in order to avoid that we introduce new concept called personalization. The Personalized Sear...
An Efficient Distributed Control Law for Load Balancing in Content Delivery Networks
Content Delivery Networks (CDN) aim at overcoming the inherent limitations of the Internet. The main concept at the basis of this technology is the delivery at edge points of the network, in proximity to the reques...
Amulti-Agent Architecture for a Co-Modal Transport System
Improving the co-modal transport and introducing systems for traveler information is becoming more and more urgent in our society in order to guarantee a high level of mobility in the long term. The goal of this research...
Architectural Strategies in Cold Regions to Create Sustainability in Residential Spaces
Disregarding the excessive consumption of energy to provide comfort in the residential units, especially in cold and mountainous regions, is one of the problems of residential complexes in Iran. Although a lot of r...