White Space Spectrum Presented by: Chris Whiteley, Director of Business Development xG Technology, Inc. Jan. 22, 2010 Potential to Deliver Broadband Wireless Access

About xG Technology, Inc. Rapid Detect and Avoid (DAA) algorithm capable of outmaneuvering the interference found in the MHz band – Spectrum covers 924 million people Roadmap to whitespace spectrum services “When you realize that this company may have found a way to take a frequency riddled with wireless garbage and turn it into a fully functioning wireless voice and data network you start to see how much of a game changer this could be for the wireless industry.” –Rich Tehrani, CEO TMCnet on xG Technology Developed an IP cellular network optimized for the delivery of mass-scale mobile VoIP and broadband – First end-to-end mobile VoIP solution

Extending Unlicensed Knowledgebase Network operating in densely populated interference-rich environment FCC approved base stations transmitting at 1 Watt Pilot network details 30 square miles 111,000 pops covered

Whitespace Potential for BWA Migrate xMax broadband wireless access to whitespace – Shift bandwidth intensive Internet access service off of unlicensed 900 MHz – Lower frequencies will benefit wireless Internet service providers (WISPs) by extending the service range – Fixed devices may operate at up to 4 Watts

Whitespace Devices Wideband receivers may dictate large or multiple antennae Expect larger form factor initially i.e. desktop modems, tablets Possible leverage of InCognito ™ platform by Cambridge Consultants – Highly complex cognitive ‘spectral sensing’ radio technology which, until now, has only been used in defense and security application. – Platform enables whitespace radios to quickly and accurately detect and avoid other broadcasts.

VoIP over Whitespace Not aware of any development for VoIP over whitespace While voice doesn't require much bandwidth, it requires error-free delivery – The number one killer of voice traffic is network latency and jitter xMax RF and MAC optimized for the delivery of mass-scale mobile VoIP and broadband Internet services – A scalable SIP-centric MAC protocol for high QoS mobile VoIP – No greater than 30ms latency from the handset to the basestation. – End-to-end system optimization with enhanced SIP and RTP protocols capable of operating robustly over mobile wireless links.

Regulatory & Political Use of whitespace is contingent upon lack of interference Supported by White Space Coalition – Microsoft, Google, Dell, HP, Intel, Philips, Earthlink and Samsung Opposed by CTIA representing the wireless industry which feels that the spectrum should be auctioned Opposed by the TV broadcasters, healthcare equipment vendors and wireless microphone users in the music and sports industries