Modified Orthogonal Space-Time Block Codes for Time-Selective Fading Channels

We consider orthogonal space-time block codes (O-STBCs) in time-selective fading channels and propose a modified O-STBC (MO-STBC), which is less subject to the performance degradation caused by symbol-by-symbol channel variation. It is shown both analytically and through computer simulations that MO...

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Veröffentlicht in:IEEE transactions on vehicular technology Jg. 57; H. 6; S. 3921 - 3927
Hauptverfasser: Villardi, Gabriel Porto, De Abreu, Giuseppe T. F., Kohno, Ryuji
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York, NY IEEE 01.11.2008
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Antennas
Applied sciences
Bit error rate
Block codes
Channels
Coding, codes
Computer simulation
Decoding
Degradation
Exact sciences and technology
Fading
Information, signal and communications theory
Mathematical analysis
Modulation
Modulation, demodulation
Molybdenum
Orthogonal space-time block codes (O-STBCs)
Phase modulation
Phase shift keying
Quadrature amplitude modulation
Radiocommunications
self-interference
Signal and communications theory
Statistical analysis
Statistics
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
time-selective fading channels
Transmission and modulation (techniques and equipments)
transmit diversity
Orthogonal space-time block codes
time-selective fading channels
transmit diversity
self-interference
Fading channels
Performance evaluation
Block code
Space-time codes
Gray code
Quadrature amplitude modulation
Computer simulation
Bit error rate
Amplitude modulation
Decoding circuit
Decoding
Orthogonality
Degradation
Phase shift keying
Selective fading
M ary modulation
Algorithm complexity
Orthogonal space-time block codes (O-STBCs)
self- interference
Antenna
Damaging
ISSN:0018-9545, 1939-9359
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Beschreibung
Zusammenfassung:We consider orthogonal space-time block codes (O-STBCs) in time-selective fading channels and propose a modified O-STBC (MO-STBC), which is less subject to the performance degradation caused by symbol-by-symbol channel variation. It is shown both analytically and through computer simulations that MO-STBCs effectively reduce the loss of orthogonality affecting O-STBCs in the symbol-by-symbol time-selective channel. MO-STBCs are systematically constructible for any number of antennas and have the same decoding complexity of conventional O-STBCs. The bit-error-rate (BER) performance of MO-STBCs over time-selective fading channels of generalized statistics, with Gray-code-mapped M-ary phase-shift-keying (PSK) modulation and quadratic-amplitude modulation (QAM), is analytically derived. Moreover, MO-STBCs can also easily be combined with existing linear O-STBC decoders specifically designed for the time-selective channel, yielding significant performance improvement over conventionally constructed and decoded O-STBCs.
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ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2008.918697