| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system for wireless data transmission that uses a channel bandwidth, channel separation, and radio frequency power spectrum. <P>SOLUTION: This system is compatible with existing deployments of wireless voice services. Transmitted waveforms are thus compatible with existing cellular networks. However, the time domain digital coding, modulation, and power control schemes are optimized for data transmission. Existing cellular network sites can thus be used to provide a high speed service optimized for wireless data traffic without the need for new radio frequency planning, and without interfering with the existing voice service deployments. <P>COPYRIGHT: (C)2013,JPO&INPIT |
