Distributed antenna system including crest factor reduction module disposed at optimum position
First Claim
1. A distributed antenna system, comprising:
- a plurality of head-end devices each configured to receive mobile communication signals from at least one corresponding base station;
a hub communicatively coupled to the plurality of head-end devices and separated from the plurality of head-end devices; and
a plurality of remote unit devices communicatively coupled to the hub,wherein the hub is configured to distribute the mobile communication signals received from each of the plurality of head-end devices to the plurality of remote unit devices,wherein each of the plurality of remote unit devices is remotely disposed to transmit the distributed mobile communication signals to a terminal in a service coverage, andwherein the hub includes at least one processor to implement;
a mixing processing unit configured to perform digital mixing processing on the mobile communication signals respectively received from the plurality of head-end devices, anda crest factor reduction (CFR) module that is disposed posterior to the mixing processing unit with respect to a downlink direction and performs CFR processing on the processed signals output from the mixing processing unit.
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Accused Products
Abstract
A distributed antenna system includes a plurality of head-end units for each receiving mobile communication signals from at least one corresponding base station, a hub unit communicatively coupled to the plurality of head-end units, and a plurality of remote units communicatively coupled to the hub unit, wherein the hub unit configured to distribute the mobile communication signals received from each of the plurality of head-end units to the plurality of remote units, wherein each of the plurality of remote units is remotely disposed to transmit the distributed mobile communication signals to a terminal in service coverage, and wherein the hub unit includes a mixing processing stage configured to perform digital mixing processing on the mobile communication signals respectively received from the plurality of head-end units, and a crest factor reduction (CFR) module disposed posterior to the mixing processing stage, with respect to a signal transmission direction.
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Citations
14 Claims
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1. A distributed antenna system, comprising:
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a plurality of head-end devices each configured to receive mobile communication signals from at least one corresponding base station; a hub communicatively coupled to the plurality of head-end devices and separated from the plurality of head-end devices; and a plurality of remote unit devices communicatively coupled to the hub, wherein the hub is configured to distribute the mobile communication signals received from each of the plurality of head-end devices to the plurality of remote unit devices, wherein each of the plurality of remote unit devices is remotely disposed to transmit the distributed mobile communication signals to a terminal in a service coverage, and wherein the hub includes at least one processor to implement; a mixing processing unit configured to perform digital mixing processing on the mobile communication signals respectively received from the plurality of head-end devices, and a crest factor reduction (CFR) module that is disposed posterior to the mixing processing unit with respect to a downlink direction and performs CFR processing on the processed signals output from the mixing processing unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A distributed antenna system, comprising:
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a head-end device configured to receive mobile communication signals from a plurality of base stations; and at least one remote unit device communicatively coupled to the head-end device, the at least one remote unit device receiving the mobile communication signals from the head-end device, the at least one remote unit device being remotely disposed to transmit the mobile communication signals to a terminal in service coverage, wherein the head-end device includes at least one processor to implement; a mixing processing unit configured to perform digital mixing processing on the mobile communication signals respectively received from the plurality of base stations, and a crest factor reduction (CFR) module that is disposed posterior to the mixing processing unit with respect to a downlink direction and performs CFR processing on the processed signals output from the mixing processing unit, and wherein the head-end device includes a band separator configured to receive the mobile communication signals respectively transmitted from the plurality of base stations and separate only signals corresponding to a specific mobile communication service band among the received mobile communication signals. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A distributed antenna system, comprising:
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at least one head-end device configured to receive mobile communication signals from a plurality of base stations; and at least one remote unit device communicatively coupled to the at least one head-end device, the at least one remote unit device receiving the mobile communication signals from the at least one head-end device, the at least one remote unit device being remotely disposed to transmit the mobile communication signals to a terminal in a service coverage, wherein the at least one remote unit device includes a signal summer configured to digitally sum the mobile communication signals received from the at least one head-end device, and a CFR module disposed posterior to the signal summer, with respect to a downlink direction, wherein the at least one remote unit device further includes a band separator configured to receive mobile communication signals received from the at least one head-end device and separate only signals corresponding to a specific mobile communication service band among the received mobile communication signals, and wherein the signal summer performs digital signal summing on different sub-band signals in a same mobile communication service band among the signals band-separated by the band separator.
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Specification