| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: range of pass band may have protective intervals at both sides to reduce leakage into neighbouring ranges of the pass band. However, in case of relatively low capacity the risk of leakage reduces. Accordingly, protective pass bands may be used to open new channels, along which information may be sent. Therefore, large number of pass bands may be used when preserving protective aspects, such as low noise for neighbouring bands. Using a protective pass band for transfer of new channels facilitates reverse compatibility, since inherited devices usually do not monitor the protective pass band. These methods may also be used on base stations of high capacity by announcement of a protective interval, which is larger than necessary for inherited devices, and using an additionally created protective pass band for transfer of new channels.EFFECT: increased throughput capacity and reduction of noise.69 cl, 14 dwg |
