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Queen City WaterfrontEMERGING PROJECTSScajaquada Creek Clean-UpBecause Scajaquada Creek is located along aheavily developed transportation corridor andhas been highly manipulated, water quality,hydrologic regime, wildlife habitat, and overallstream health have been seriously degraded.Two projects have been completed toimprove the health of the Creek channel:the separation of the Creek from Hoyt Lakein the late 1970s to reduce the amount ofraw sewerage entering the lake, and theremediation of contaminated sedimentslocated beneath the Scajaquada Expresswayin 1999. Today, the Creek remains animpaired water body with much work to bedone. The 2002 Scajaquada CreekManagement Plan developed by a WatershedAdvisory Council provides managementstrategies, goals, and action items to restoreand protect the ecological quality of thewatershed. In addition, some considerationhas been given to extending coastal zonemanagement regulation to ScajaquadaCreek, and this should be pursued.Tonawanda/Ontario Business DistrictThe business district surrounding the intersectionof Tonawanda and Ontario Streets hasbeen designated by BERC as a city "LiveZone." Redevelopment of commercial uses inthis near-waterfront location can help achievethe goals of economic development andimproved neighborhood/waterfront connections.A program is in place and action ispending. The potential for the neighborhoodis worthy of further effort.H.H. Richardson RestorationLocated between the Scajaquada ExpresswayGrant Street and Elmwood Avenue exits, theBuffalo State College and H.H. RichardsondesignedBuffalo State Hospital complexconstitute an important regional heritageand educational resource area. This area hasa number of pending projects that can helpcontribute to meeting economic development,neighborhood improvement, andpublic access goals.Governor Pataki allocated $100 million in his2003-2004 budget to rehabilitate the historictwin-tower Buffalo State Hospital complexand support efforts to find new uses suchas a combined Frederick Law Olmsted SchoolComplex, a new Burchfield-Penny Art Center,and a Buffalo architectural museum. Inaddition, the State Dormitory Authority hasannounced a $4 million down payment oncourt-ordered preservation of the facility.Renovations to McKinley Vocational HighSchool and Campus West are included inthe Joint Schools Construction program.The economic revitalization of the site isconnected to the success of the OlmstedCrescent, a coordinated marketing effortfor geographically concentrated art, cultural,and heritage resources generally locatedalong the Scajaquada Creek and Expressway.Niagara StreetSeveral different plans have offered thesuggestion that the section of Niagara Streetbetween Tonawanda and Austin has significantpotential for redevelopment. It is currentlya mix of industrial, commercial, retail, andresidential uses with some vacancies. Someof the businesses are marine-related (andtherefore water-dependent) and the segmentis a portion of the City’s Seaway Trail route.BERC has designated the strip as a “LiveZone” and action is pending. The potential isworthy of further effort.60 Achieving the Vision: Projects in the Buffalo Waterfront Corridor
Figure 12Floor of simulated office building, andposition of access points (*).signal for various back-off values. By backoffwe mean the input back-off relative tothe 1 dB compression point. For reference,the HIPERLAN/2 spectrum mask is also depicted.As can be seen, the spectrum requirementscan be achieved by backing off4.0 dB.The requirement for adjacent channelsuppression can be fulfilled with current requirementsfrom the spectrum mask. Thatis, a back-off of 4 or 5 dB for typical poweramplifier models is sufficient. Thus, this requirementis only about 2 or 3 dB greaterthan for typical single-carrier modulationschemes.System performanceThe performance of representative HIPERLAN/2 systems was evaluated for two indoorenvironments: an office building andan exhibition hall. The office scenario includeda building with five floors and severalmobile terminals. Eight access pointsper floor, located at the same position oneach floor, provided coverage (Figure 12).The average path loss (that is, without fastfading) between a mobile terminal and anaccess point was calculated using the extendedKeenan-Motley model, which includesattenuation by distance, walls, andfloors in the direct propagation path. 20The exhibition hall scenario consisted ofa large building with one floor and no interiorwalls. The hall was covered with 16 accesspoints placed in a rectangular grid witha site-to-site distance of 60 m. We assumeda requirement for very high capacity in thisenvironment, which motivated the largenumber of access points. We used a line-ofsightpropagation model. Furthermore, weadded log-normal fading with a standard deviationof 2 dB (in both scenarios) to modelshadowing-—for instance, due to peoplemoving about in the buildings.The mobile terminals were randomlyplaced in the buildings according to uniformdistribution. The simulation techniquewas static: each iteration correspondedto a traffic situation that was unrelatedto the previous one; that is "snapshots" weretaken of the situation in the building. Ineach snapshot, one mobile terminal was activefor each access point. Interference on alink arose from access points and mobile terminals,due to the unsynchtonized TDDMAC frame. External interference was modeledby assuming that a second operator uses11 of the 19 available carriers.Before running the simulations, we obtaineda frequency plan and a downlinkpower setting. The frequency plan was obtainedby a distributed DFS algorithm' 2 , andthe access point power settings were set individually,so that the received signal powetof each mobile terminal exceeded the targetvalue.Fast uplink power control was used—thisaims at constant received power in the ac-Ericsson Review No. 2, 2000 117
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Ericsson 2/2000REVIEWTHE TELECOMMUN
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ContributorsIn this issueLuis Barri
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Ericsson Review is also published o
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Evolving from cdmaOne to third-gene
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Figure 2Operators Harmonization Agr
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more features, and greater reliabil
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Figure 7Ericsson's third-generation
Page 16 and 17: Figure 11Ericsson's timeline for ev
Page 18 and 19: Third-generation TDMAChristofer Lin
Page 20 and 21: TABLE 1 MODULATION AND CODING SCHEM
Page 22 and 23: Figure 3An example of a cell patter
Page 24 and 25: Figure 5Curves illustrating maximum
Page 26 and 27: TABLE 3. DYNAMIC PACKET DATA SIMULA
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Page 30 and 31: Business solutions for mobile e-com
Page 32 and 33: Figure 2Comparison of traditional a
Page 34 and 35: BOX B, THE E-COMMERCE TIMELINE1999E
Page 36 and 37: Figure 6Mobile e-Pay end-user servi
Page 38 and 39: Figure 8Access features with push-a
Page 40 and 41: AuthenticationTo verify that end-us
Page 42 and 43: BOX C, MARKET HARMONIZATIONOn Tuesd
Page 44 and 45: Figure 2The footprint of the RBS 22
Page 46 and 47: Communications security in an all-I
Page 48 and 49: BOX B, SYMMETRIC KEY SYSTEMSGood sy
Page 50 and 51: Figure 4Construction of an ESP-prot
Page 52 and 53: Figure 7An X.500 database structure
Page 54 and 55: Figure 9GPRS VPN scenarios.Figure 1
Page 56 and 57: TRADEMARKSRC4 and RC4 are registere
Page 58 and 59: HIPERLAN type 2 for broadband wirel
Page 60 and 61: Figure 3Typical usage of communicat
Page 62 and 63: Figure 6Mapping of higher layer pac
Page 64 and 65: TABLE 1PHYSICAL LAYER MODES OF HIPE
Page 68 and 69: TABLE 2. IMPORTANT PARAMETERS FOR N
Page 70: Previous issuesNo. 1,2000IPv6—The
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