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Optimization of Multimedia Progressive Transmission Over MIMO Channels
- Optimization of Multimedia Progressive Transmission Over MIMO Channels
- Chang, Seok-Ho; Choi, Jihwan P.; Cosman, Pamela C.; Milstein, Laurence B.
- DGIST Authors
- Choi, Jihwan P.
- Issue Date
- IEEE Transactions on Vehicular Technology, 65(3), 1244-1260
- Article Type
- Architecture; Bells; Block Codes; Codes (Symbols); Communication Channels (Information Theory); Data Communication Equipment; Data Communication Systems; Diagonal Bell Labs Space-Time Architecture (D-Blast); Diversity-Multiplexing Tradeoff (DMT); Diversity-Multiplexing Tradeoffs (DMT); Errors; Feedback Control; Group Zeroforcing Receiver; Information Outage Probability; Iterative Decoding; Mean Square Error; MIMO Systems; Minimum Mean Square Error (MMSE) Receiver; Minimum Mean Square Errors (MMSE); Multimedia Progressive Sources; Multiple-Input-Multiple-Ouput (MIMO) Systems; Multiplexing; Orthogonal Space-Time Block Codes (OSTBCs); Piecewise Linear Techniques; Probability; Signal-to-Noise Ratio; Space-Time Adaptive Processing; Space-Time Architecture; Space-Time Block Coding (STBC); Space-Time Codes; Telecommunication Repeaters; Vertical Bell Labs Space-Time Architecture (V-BLAST); Zero Forcing Receivers
- This paper studies the optimal transmission of multimedia progressive sources, which require unequal target error rates in their bitstream, over multiple-input-multiple-output (MIMO) channels. First, we derive the information outage probability expression of a space-time code for an arbitrarily given piecewise-linear diversity-multiplexing tradeoff (DMT) function and the conditions for the existence of a crossover point of the information outage probability curves of the space-time codes. We prove that as long as the crossover point of the outage probabilities exists, as spectral efficiency increases, the crossover point in the signal-to-noise ratio (SNR) monotonically increases, whereas that of the outage probability monotonically decreases. This analysis can be applied to any space-time code, receiver, and propagation channel with a given DMT function. As a specific example, we analyze the two-layer diagonal Bell Labs space-time architecture (D-BLAST) with a group zero-forcing receiver, the vertical BLAST (V-BLAST) with a minimum mean-square error receiver, and orthogonal space-time block codes (OSTBCs), and prove the monotonic behavior of the crossover point for those codes. Based on that, with respect to D-BLAST, V-BLAST, and OSTBC, we derive a method for the optimal space-time coding of a sequence that contains numerous progressive packets. We show that by employing the optimization method rather than exhaustive search, the computational complexity involved with optimal space-time coding can be exponentially reduced without losing any peak SNR performance. © 2015 IEEE.
- Institute of Electrical and Electronics Engineers Inc.
- Related Researcher
Choi, Jihwan P.
NC(Networks and Communications) Research Group
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