Research Article
Distributed Structured Compressive Sensing-Based Time-Frequency Joint Channel Estimation for Massive MIMO-OFDM Systems
Table 1
Computational complexity in one iteration.
| Operations | Steps | Computational complexity |
| Signal proxy | 5 | | Normal operation | 6, 8, 12, 13, 14, 15, 23 | | Identification or pruning | 6, 8, 9, 12 | | LS operation | 8, 10 | | Residual computation | 11 | |
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