performance result; PER: packet error ratio, the result after channel decoding; delay: determined by PER (ARQ retransmissions) and roundtrip times; throughput: determined by bandwidth, PhyMode (modulation and code rate), and ARQ overhead; second-hop throughput: reduced by resources required on first hop; and third-hop throughput: reduced by resources required on first and second hops. First, the sequential multihop scenario is studied. Second, the coverage and capacity extension scenarios (shown in Figures 8.2 and 8.3) are analyzed. Third, a realistic deployment study in Jersey is presented. Whenever the DL SINR results are plotted over the cell area, they show the SINR of the best station (BS, RN), not the maximum SINR. The important difference is that the best station is determined by the highest rate any of the stations can offer. The rate/throughput results contain the maximum achievable rate at a certain position within the cell, taking the required first hop resources into account also. Therefore, the second-hop maximum rate near the relay cannot be as much as near the BS. The relay is chosen as the serving station (association) if this is an advantage in fewer resources used, which is here the same as the maximum rate. In both scenarios, in huge areas the relay offers an advantage over the single-hop case, SO there is more than just high SINR around RNs. On the layer two, there is overhead due to framing, signaling, and ARQ retransmissions. The latter depends on PER, which can be taken into account when assuming selective repeat ARQ by the following equation: raboveARQ = "belowARQ (1-PER) © 2009 by Taylor & Francis Group, LLC Multihop Extensions to Cellular Networks In total, we obtain a MAC overhead of MAC/PHY = 132.3%. The PHY over- head of PHY/RAW = 107.1% comes from OFDM cyclic prefix duration. Under multihop operation, individual resources are needed on every hop. The constant packet length requires a different resource share depending on the used PhyMode, which determines the maximum rate Vi,max usab