Bell Laboratories Layered Space-Time

Bell Laboratories Layer Space-Time (BLAST) is a transceiver architecture for offering spatial multiplexing over multiple-antenna wireless communication systems. Such systems have multiple antennas at both the transmitter and the receiver in an effort to exploit the many different paths between the two in a highly-scattering wireless environment. BLAST was developed by Gerard Foschini at Lucent Technologies' Bell Laboratories (now Nokia Bell Labs). By careful allocation of the data to be transmitted to the transmitting antennas, multiple data streams can be transmitted simultaneously within a single frequency band — the data capacity of the system then grows directly in line with the number of antennas (subject to certain assumptions). This represents a significant advance on current, single-antenna systems.^[1]

^ Gerard. J. Foschini (October 1996). "Layered Space-Time Architecture for Wireless Communication in a Fading Environment When Using Multi-Element Antennas" (PDF). Bell Labs Technical Journal: 41–59. Archived from the original (PDF) on 2022-02-21. Retrieved 2007-03-31.

[1] Gerard. J. Foschini (October 1996). "Layered Space-Time Architecture for Wireless Communication in a Fading Environment When Using Multi-Element Antennas" (PDF). Bell Labs Technical Journal: 41–59. Archived from the original (PDF) on 2022-02-21. Retrieved 2007-03-31.

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