Radio selective calling receiver using diversity reception
First Claim
1. A radio selective calling receiver comprising:
- field strength detection means for detecting a received field strength;
first time diversity processing means for performing time diversity processing with a large time diversity effect and large power consumption;
second time diversity processing means for performing time diversity processing with a small time diversity effect and small power consumption; and
selection means for determining, on the basis of a detection result from said received field strength detection means, whether the received field strength is high or low, and when the reception level is high, the second time diversity processing means is selected with the small time diversity effect and small power consumption, thereby saving power consumption of the battery, and when the reception level is low, the first time diversity processing means is selected with the large time diversity effect and large power consumption.
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Abstract
A radio selective calling receiver includes a field strength detection unit for detecting a received field strength, a first time diversity processing section for performing time diversity processing with a large time diversity effect and large power consumption, a second time diversity processing section for performing time diversity processing with a small time diversity effect and small power consumption, and a selection unit for determining, on the basis of a detection result from the field strength detection unit, whether the received field strength is high or low, and selecting the first time diversity processing section for a low field strength or the second time diversity processing section for a high field strength.
40 Citations
2 Claims
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1. A radio selective calling receiver comprising:
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field strength detection means for detecting a received field strength; first time diversity processing means for performing time diversity processing with a large time diversity effect and large power consumption; second time diversity processing means for performing time diversity processing with a small time diversity effect and small power consumption; and selection means for determining, on the basis of a detection result from said received field strength detection means, whether the received field strength is high or low, and when the reception level is high, the second time diversity processing means is selected with the small time diversity effect and small power consumption, thereby saving power consumption of the battery, and when the reception level is low, the first time diversity processing means is selected with the large time diversity effect and large power consumption. - View Dependent Claims (2)
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Specification
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- Resources
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Current AssigneeNEC Corporation
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Original AssigneeNEC Corporation
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InventorsMotohashi, Teruyuki
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Primary Examiner(s)Trost, William G.
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Assistant Examiner(s)Legree, Tracy M.
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Application NumberUS08/905,642Time in Patent Office876 DaysField of Search455/343, 455/383, 455/132-134, 455/101, 455/272, 455/269, 455/277.1, 455/277.2, 455/FOR 343, 455/FOR 38.3, 455/FOR 2.72 , 455/FOR 132-134, 455/FOR 269, 455/FOR 277.1, 455/FOR 277.2, 375/347US Class Current340/7.43CPC Class CodesH04W 52/0245 according to signal strengthH04W 88/022 Selective call receiversY02D 30/70 in wireless communication n...
