Abstract
Only fully digital implementation of signal processing functions enable considerable performance and economic improvement to be obtained in high-capacity multilevel QAM digital radio modems. This is demonstrated with an adaptive time-domain equalizer based on a set of four identical VLSI chips, which are implemented in a 2- mu m advanced CMOS technology. Due to a high flexibility designed into this chip, it can be used in 16-, 64- and 256-QAM systems not only in the equalizer, but also in the cross-polarization interference canceller necessary in systems operating with cross-polarized cofrequency channels. The solution has been made possible by fully using the capabilities of semisystolic arrays using carry-save arithmetic in terms of pipelining and parallelism.
| Original language | English |
|---|---|
| Title of host publication | Unknown Host Publication Title |
| Publisher | Ohmsha Ltd |
| Pages | 1212-1216 |
| Number of pages | 5 |
| ISBN (Print) | 4274031888 |
| State | Published - 1987 |
| Externally published | Yes |