[PDF] Top 20 Complexity Reduction in ML Decoding For MIMO Systems

... the ML detection gives superior performance in terms of BER, the complexity grows ...exponentially. ML detection requires exhaustive exponentially growing search among the entire candidate that ... See full document

... multiplexing MIMO system using OSIC detection. To reduce the complexity of the selec- tion process itself, we propose a low complexity selec- tion method using a new detection ...selection ... See full document

... computational complexity by eliminating the number of visited nodes based on the probability or statistical properties of the additive ...barter decoding performance for complexity ...reduce ... See full document

... system complexity reduction. The decoding algorithm for layered space-time codes based on matrix triangularization is presented in ...maximum-likelihood decoding approach based on matrix ... See full document

... sphere decoding algorithm was introduced in [9] as- suming a single-antenna, real-valued fading channel ...complex-valued MIMO channels. A re- duced complexity algorithm was proposed in [10], where ... See full document

... Fig.3. Tree representation of Sphere decoding system A SD instead of visiting the complete node visits only the subset of the tree which reduces the complexity of the algorithm. The search starts from the ... See full document

... communication systems, ample research is currently dedicated to multiple-input multiple-output (MIMO) techniques, owing to their ability to provide diversity and multiplexing gain within limited bandwidth ... See full document

... 3.3.2 Successive interference cancellation (SIC) equalizer The SIC-based detector was initially used in VBLAST systems. In VBLAST architecture [8], a successive cancel- lation step and interference nulling step ... See full document

... arrangement. MIMO transmission has become a popular technique to increase spectral ...efficiency. MIMO supports greater data rate and higher reliability in wireless ...computational complexity is ... See full document

... The ML detection problem is known to be ...polynomial complexity in the number of symbols jointly ...computational complexity and accuracy of the above ...baseband MIMO BER measurement system ... See full document

... high complexity of ...average complexity, the worst case complexity of the SD is identical to that of ...computational complexity by only keeping those candidates with the best accumulated ... See full document

... Their decoding complexity was very high for them to be efficiently implemented in hardware when compared with a decoder for convolutional codes like a Viterbi ...communication systems has been ... See full document

... MAP-based MIMO signal detection used in [12, 14, 15] are limited to systems with a small number of antennas due to their exponential complex- ...ity. MIMO signal detection techniques of high-order ... See full document

... single-user systems. We demonstrated that SIC-MAP-MIMO perfotextance under time-varying multipath conditions is mostly on par with the two MMSE-based turbo equalization schemes: TE-MMSE-OND2-MIMO, ... See full document

... data OFDM symbol are also plotted in Figure 4. As can be seen in Figure 4, the numerical results show that the MSE values of the CIR estimates obtained by the proposed scheme with just one iteration are even smaller than ... See full document

... reported to achieve a near ML performance. However, these schemes require additional computation after the hard decision for log-likelihood ratio (LLR) information of all bits [9, 10]. Another previous work has ... See full document

... technology is seen to provide the best solution to high data rate and reliable wireless communication. For the purpose of detection, Maximum Likelihood receivers are most optimal but highly complex especially with higher ... See full document

... In this work, a new method for optimizing the Inter Cell Interference (ICI) to increase the channel capacity of the system or the throughput has been proposed. The proposed algorithm has higher channel capacity than the ... See full document

... mit and receive antennas is depicted in Figure 2(a). A close analysis of the search tree-diagram of Figure 2(a) reveals that the information collected by the search process of the modified OHRSA-ML method may be ... See full document

... and MIMO systems has extremely good potential for high-data-rate communications with low power consumption [10], ...computational complexity. For that reason, a more practicable decoding ... See full document