Comparison of space division multiplexing schemes employing multiple antennas in OFDM forward link

Junichiro Kawamoto, Takahiro Asai, Kenichi Higuchi, Mamoru Sawahashi

Research output: Contribution to journalConference article

3 Citations (Scopus)


This paper compares the achievable throughput performance of the multiple antenna transmission and reception technique called MIMO (Multiple-Input Multiple-Output) including the adaptive antenna array beam forming (AAA-BF) transmitter, using a 100-MHz bandwidth for the OFDM (Orthogonal Frequency Division Multiplexing) forward link in a multipath Rayleigh fading channel aiming at high frequency efficiency up to 10 bps/Hz. Simulation results elucidate that to achieve high frequency efficiency of greater than approximately 4 bps/Hz, MIMO multiplexing can decrease the required transmission power the most for two and four transmitter and receiver antennas since lower-level data modulation or a lower channel coding rate is applicable compared to the AAA-BF transmitter and MIMO diversity schemes. We also show that the average PER of 10-2 is possible for the information bit rate of 1 Gbps using a 100-MHz bandwidth (i.e., 10 bps/Hz) at the transmit signal energy per bit-to-background noise power spectrum density ratio (Eb/N 0) of approximately 10 (13) dB using the combination of 16QAM modulation and the coding rate of 5/6 together with four-branch MIMO multiplexing in a 12-path fading channel with the maximum Doppler frequency of fD = 20 Hz when the fading correlation between antennas is 0 (0.6).

Original languageEnglish
Pages (from-to)452-457
Number of pages6
JournalIEEE Vehicular Technology Conference
Issue number1
Publication statusPublished - 1 Dec 2003
Event2003 IEEE 58th Vehicular Technology Conference, VTC2003-Fall - Orlando, FL, United States
Duration: 6 Oct 20039 Oct 2003

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