发明名称 |
Efficient system and method for facilitating quick paging channel demodulation via an efficient offline searcher in wireless communications system |
摘要 |
A system for facilitating the detection and successful decoding of a quick paging channel adapted for use with a wireless communications system supporting a primary paging channel and a quick paging channel. The system includes a first mechanism for detecting a pilot signal associated with the quick paging channel based on a received signal and includes a coherent integrator of a first length and a noncoherent integrator of a second length. The second mechanism determines receiver operating characteristics of the system based on the pilot signal and a quick paging channel signal associated with the quick paging channel. The third mechanism optimizes the first length and the second length based on the receiver operating characteristics. In a specific embodiment, the first mechanism includes a CDMA receive chain for receiving the received signal and providing a digital received signal in response thereto to a sample Random Access Memory (RAM). The sample RAM includes a mechanism for sampling the digital received signal at predetermined time slots and providing a sampled received signal in response thereto. An interpolator adjusts the rate of the sampled received signal and provides a rate-adjusted signal in response thereto. The first mechanism includes a searcher that includes the first coherent integrator, a second coherent integrator, and the noncoherent integrator. A complex despreader correlates the rate-adjusted received signal with a pseudo noise candidate code and providing a correlation result in response thereto. |
申请公布号 |
AU2937401(A) |
申请公布日期 |
2001.07.31 |
申请号 |
AU20010029374 |
申请日期 |
2001.01.12 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
FARROKH ABRISHAMKAR;MARK ROH |
分类号 |
H04B1/7075;H04B1/7077;H04B7/26;H04W68/00 |
主分类号 |
H04B1/7075 |
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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