Abstract
Recent advances in radio technology enabled software-defined radios (SDRs), which can switch from one frequency band to another at minimum cost, are making dynamic multi-band access and sharing possible. Also, recent advances in signal processing combined with those in antenna technology, enabled MIMO (Multiple-Input Multiple-Output) capabilities, which created great opportunities for enhancing the throughput of wireless networks. Together SDRs and MIMO empower the next-generation wireless networks, such as mesh networks, with dynamic and adaptive bandwidth sharing and use along time, frequency, and space. In this paper, we design and model the radio and interference constraints on multi-hop wireless networks, when they are both SDR-capable and MIMO-equipped. The developed constraint models were then used to formulate and solve multi-hop routing problems in wireless networks with MIMO and multi-band capabilities. We evaluated and analyzed the throughput that multi-hop wireless networks can achieve, when they are both allowed to communicate on multiple bands and equipped with MIMO links.
| Original language | English |
|---|---|
| Pages (from-to) | 101-107 |
| Number of pages | 7 |
| Journal | IETE Technical Review (Institution of Electronics and Telecommunication Engineers, India) |
| Volume | 26 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Mar 2009 |
| Externally published | Yes |
Keywords
- Constraint design
- MIMO (Multiple-Input Multiple-Output)
- Multi-band access
- Throughput