The demand for speed in wireless networks is incessantly rising. In recent times, supportive wireless communication has received marvelous interests as an untapped means for perking up the performance of information communication operating over the ever-demanding wireless medium. Supportive communication has became known as a novel aspect of diversity to imitate the strategies designed for various antenna systems, since a wireless mobile device might not be competent to sustain multiple transmit antennas due to cost, size, or hardware limitations. By utilizing the broadcast nature of the wireless channel, supportive communication permits single antenna radios to share their antennas to structure a virtual antenna array, and offers important performance enhancements. In this paper we introduce physical layer supportive communications, topology control, and network capacity in MANETs. We also aim to perk up the network capacity of mobile ad hoc networks with supportive communications.