发明名称 |
Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
摘要 |
A telecommunication system for processing a plurality of simultaneous bidirectional communications includes a primary station and at least one secondary station using wireless transmissions over one of a plurality of available RF carrier frequencies. Each carrier frequency has an associated predetermined bandwidth which is designed to accommodate one analog voice signal therein and each carrier frequency contains a plurality of time slots. Each bidirectional communication includes transmit (TX) and receive (RX) information signals. The secondary stations include a baseband processor for PSK coding an input signal; a storage means coupled to said baseband processor for storing information; a control means coupled to the baseband processor and the storage means to permit access to the stored information; a filter for performing quadrature sampling of the PSK coded signal; a digital to analog converter for converting the sampled PSK coded signal into an analog signal; and a frequency translator for translating the frequency spectrum of the analog signal to a second frequency spectrum. |
申请公布号 |
US6282180(B1) |
申请公布日期 |
2001.08.28 |
申请号 |
US19990433430 |
申请日期 |
1999.11.04 |
申请人 |
INTERDIGITAL TECHNOLOGY CORPORATION |
发明人 |
PANETH ERIC;HANDZEL MARK J.;MORLEY STEVEN ALLAN;AVIS GRAHAM M. |
分类号 |
H04L29/02;H04B7/005;H04B7/04;H04B7/08;H04B7/26;H04J3/00;H04J3/06;H04J3/16;H04J4/00;H04L1/00;H04L1/06;H04L1/16;H04L1/18;H04L5/14;H04L5/22;H04L12/56;H04L27/18;H04M;H04M1/00;H04M3/00;H04M11/00;H04M11/06;H04Q3/42;H04Q3/58;H04Q3/62;H04Q11/04;H04W4/18;H04W12/02;H04W12/10;H04W28/04;H04W28/06;H04W28/14;H04W28/24;H04W28/26;H04W36/06;H04W36/12;H04W40/02;H04W52/00;H04W56/00;H04W72/04;H04W72/12;H04W74/00;H04W74/04;H04W76/02;H04W84/00;H04W84/08;H04W84/14;H04W88/02;H04W88/08;(IPC1-7):H04J3/02 |
主分类号 |
H04L29/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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