BCP28 - Enhancing TCP Over Satellite Channels using Standard Mechanisms: Best current practices document describing ways to improve TCP performance over satellite links.
RFC 1323 - TCP Extensions for High Performance: Defines TCP Window Scale option, timestamps, and protection against wrapped sequence numbers (PAWS).
RFC 2018 - TCP Selective Acknowledgement Options: Proposed standard defining the SACK extension, a technique to better recover from packet loss.
RFC 2415 - Simulation Studies of Increased Initial TCP Window Size: Informational document.
RFC 2581 - TCP Congestion Control: Proposed standard set of congestion avoidance features.
RFC 2861 - TCP Congestion Window Validation: Experimental standard that addresses revalidation of the congestion window after a period when the connection was not network-limited.
RFC 2883 - An Extension to the Selective Acknowledgement Option for TCP: Standard extending the use of SACK to acknowledging duplicate packets.
RFC 2988 - Computing TCP's Retransmission Timer: Proposed standard.
RFC 3042 - Enhancing TCP's Loss Recovery Using Limited Transmit: Proposed standard that decreases reliance on the retransmission timer.
RFC 3168 - The Addition of Explicit Congestion Notification to IP: Proposed standard adding extra information to TCP allowing routers to inform end-points about congestion.
RFC 3390 - Increasing TCP's Initial Window: Proposed standard, intended to improve startup performance of TCP.
RFC 3782 - The NewReno Modification to TCP's Fast Recovery Algorithm: Proposed standard.
RFC 793 - Transmission Control Protocol: Standard, STD7, the basis for all later extensions.