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http://dx.doi.org/10.12673/jant.2011.15.3.392

A Joint ML and ZF/MMSE Detection Algorithm in Uplink for BS Cooperative System  

Kim, Jurm-Su (Hansei University)
Kim, Jeong-Gon (Korea Polytechnic University)
Kim, Seok-Woo (Hansei University)
Publication Information
Journal of Advanced Navigation Technology / v.15, no.3, 2011 , pp. 392-404 More about this Journal
Abstract
In this paper, we address the issue of joint detection schemes for uplink cellular system when base station cooperation is possible for multi-user detection in multi-cell scenario. The ZF, ML, MMSE and SIC detection are analyzed and evaluated as a conventional scheme. ML attains the optimal performance but the complexity increases exponentially, ZF/MMSE have simple structure but have poor detection performance and SIC has better performance but it has large complexity and potential of the error propagation. However, they need the increased decoder complexity as the number of iteration is increased. We propose a new joint ML and ZF/MMSE detection scheme, which combines the partial ML decoding and ZF/MMSE detection, in order to decrease the decoder complexity. Simulation results show that the proposed scheme attains same or a little bit better BER performance and expect reduced decoder complexity, specially in the case of large number of Base Station are cooperated each other.
Keywords
ML; ZF; MMSE; SIC; BS-Cooperation;
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