Expedited DFS Review Request

FCC ID: LDK102091

Operational Description

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FCCID_2128570

                                                                      Jim Nicholson
                                                                      EMC Compliance Engineer
                                                                      Cisco Systems, Inc.
                                                                      4125 Highlander Parkway
                                                                      Richfield, OH 44286

November 25, 2013


Re: FCC ID:              LDK102091

Applicant:               Cisco Systems Inc



Date of Original E-mail: 11/25/2013

Please apply the “DFS Expedited Review process” for this device based on the following criteria:


                                                               Previous FCC ID:       New Application FCC ID:
                 Expedited Review Checklist                      LDK102087                 LDK102091
         Technology:                                             802.11n / ac              802.11n / ac
         Test labs used by this and previous
                                                                Cisco Systems                Cisco Systems
         report
         Differences between the products such              Supports 4 Tx /4 Rx          Supports 4 Tx / 4 Rx
         as TX power, modulation, receivers,              paths, 17dBm Tx power        paths, 17dBm Tx power
         processing circuitry, etc.                               per path                    per path.
                                                                                      Uses Marvel chipset and
                                                          Uses Marvel chipset and
                                                                                      Cisco Systems "Clean Air"
                                                           Cisco Systems "Clean
                                                                                       algorithm for DFS radar
                                                           Air" algorithm for DFS
                                                                                      detection. DFS detection is
                                                           radar detection. DFS
                                                                                      controlled completely by the
         Differences / similarities in DFS                  detection is controlled
                                                                                      Cisco SaGE engine (the Cisco
         functioning, circuitry, software, etc.            completely by the Cisco
                                                                                         IP pulse processing and
                                                          SaGE engine (the Cisco IP
                                                                                            detection engine)
                                                             pulse processing and
                                                                                        embedded in the Marvel
                                                              detection engine)
                                                                                      chip. This engine is identical
                                                          embedded in the Marvel
                                                                                       to the SaGE engine used in
                                                                     chip.
                                                                                               LDK102087
         Antenna information and differences for               Supports 2‐6 dBi
                                                                                      Supports 2‐6 dBi antennas
         the minimum gain antennas                                antennas
                                                              Supports 20, 40 and        Supports 20,40 and
         Bandwidth information and differences
                                                              80MHz bandwidths           80MHz bandwidths


Best Regards,



Jim Nicholson
Compliance Engineer


Phone: (330) 523-2094                 Fax:   (330) 523-2002           E-Mail: jimnicho@cisco.com



Document Created: 2013-11-25 15:35:11
Document Modified: 2013-11-25 15:35:11

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