Capacity-Region-Achieving Sparse Regression Codes for MIMO Multiple-Access Channels
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2026
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866908959640649728 |
|---|---|
| author | Yan, Hao Liu, Lei Liu, Yuhao Çakmak, Burak Caire, Giuseppe |
| author_facet | Yan, Hao Liu, Lei Liu, Yuhao Çakmak, Burak Caire, Giuseppe |
| contents | This paper proposes a coding framework for capacity-region-achieving sparse regression (SR) codes over MIMO multiple-access channels (MIMO-MAC), where a single SR code is used for each user at the transmitter. With random semi-unitary dictionary matrices applied for encoding, multiple-access OAMP (MA-OAMP) enables reliable parallel interference cancellation (PIC) at the receiver. Theoretically, an optimal coding principle with the MA-OAMP receiver, which achieves the sum capacity and, in combination with time sharing, achieves the entire capacity region, is established as the guiding principle for designing capacity-region-achieving codes. Accordingly, a coding scheme for capacity-region-achieving SR codes is proposed via proper power allocation over the position-modulated signals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_11062 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Capacity-Region-Achieving Sparse Regression Codes for MIMO Multiple-Access Channels Yan, Hao Liu, Lei Liu, Yuhao Çakmak, Burak Caire, Giuseppe Information Theory This paper proposes a coding framework for capacity-region-achieving sparse regression (SR) codes over MIMO multiple-access channels (MIMO-MAC), where a single SR code is used for each user at the transmitter. With random semi-unitary dictionary matrices applied for encoding, multiple-access OAMP (MA-OAMP) enables reliable parallel interference cancellation (PIC) at the receiver. Theoretically, an optimal coding principle with the MA-OAMP receiver, which achieves the sum capacity and, in combination with time sharing, achieves the entire capacity region, is established as the guiding principle for designing capacity-region-achieving codes. Accordingly, a coding scheme for capacity-region-achieving SR codes is proposed via proper power allocation over the position-modulated signals. |
| title | Capacity-Region-Achieving Sparse Regression Codes for MIMO Multiple-Access Channels |
| topic | Information Theory |
| url | https://arxiv.org/abs/2604.11062 |